diff --git a/.eslintrc b/.eslintrc
index 5f2f808..f079835 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -9,7 +9,10 @@
         "escape": true
     },
     "rules": {
-        "strict": 0,
+        "strict": [
+            "error",
+            "global"
+        ],
         "curly": 0,
         "no-empty": 0,
         "no-underscore-dangle": 0,
diff --git a/README.md b/README.md
index 93ee4be..c7e0629 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@ The intent is to simplify the request process by handling the tedious logic. It'
   * [Search Items Based on Price and Condition](#searchitemsbyfilter)
   * [Taxonomy Api(getDefaultCategoryTreeId, getCategoryTree, getCategorySubtree, getCategorySuggestions)](#taxonomyapi)
   * [Get Most Watched item, Get Most Similar Items](#merchandisingapi)
+  * [Get All Categories, GetUserDetails, GetShippingCost, GetItemStatus](#shoppingapi)
 * [Test](#test)
 * [Issues](#issues)
 * [Contribution](#contribution)
diff --git a/demo/getAllCategories.js b/demo/getAllCategories.js
deleted file mode 100644
index dc82f26..0000000
--- a/demo/getAllCategories.js
+++ /dev/null
@@ -1,12 +0,0 @@
-const Ebay = require('../src/index');
-
-let ebay = new Ebay({
-    clientID: "-- Client App id ----",
-    details: "childCategories" //optional parameter
-});
-
-ebay.getAllCategories().then((data) => {
-    console.log(data); //extract data.CategoryArray
-}, (error) => {
-    console.log(error);
-})
\ No newline at end of file
diff --git a/demo/getUserDetails.js b/demo/getUserDetails.js
deleted file mode 100644
index 93ee91e..0000000
--- a/demo/getUserDetails.js
+++ /dev/null
@@ -1,11 +0,0 @@
-const Ebay = require('../src/index');
-
-let ebay = new Ebay({
-    clientID: "-- Client App ID ----",
-    details: true // To require detailed info or put false
-});
-ebay.getUserDetails("ajaykumapratha_0").then((data) => {
-    console.log(data);
-}, (error) => {
-    console.log(error);
-});
\ No newline at end of file
diff --git a/demo/shopping.js b/demo/shopping.js
new file mode 100644
index 0000000..7ecc187
--- /dev/null
+++ b/demo/shopping.js
@@ -0,0 +1,41 @@
+'use strict';
+
+const Ebay = require('../src/index');
+
+let ebay = new Ebay({
+    clientID: "--AppID/ClientID--",
+});
+
+ebay.getAllCategories('1234').then((data) => {
+    console.log(data); //extract data.CategoryArray
+}, (error) => {
+    console.log(error);
+});
+
+
+// Get User Profile 
+// https://developer.ebay.com/devzone/shopping/docs/callref/GetUserProfile.html
+ebay.getUserDetails({ userId: "ajaykumapratha_0", details: true }).then((data) => {
+    console.log(data);
+}, (error) => {
+    console.log(error);
+});
+
+
+// Get Item Status
+// https://developer.ebay.com/devzone/shopping/docs/callref/GetItemStatus.html
+ebay.getItemStatus(["153265274986", "153265274986"]).then((data) => {
+    console.log(data);
+}, (error) => {
+    console.log(error);
+});
+
+// https://developer.ebay.com/devzone/shopping/docs/callref/GetShippingCosts.html
+ebay.getShippingCosts({
+    itemId: "153265274986", destCountryCode: 'US',
+    destPostalCode: '95128'
+}).then((data) => {
+    console.log(data);
+}, (error) => {
+    console.log(error);
+});
\ No newline at end of file
diff --git a/package.json b/package.json
index d02f3dc..78edf8a 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,6 @@
   "devDependencies": {
     "chai": "^4.1.2",
     "eslint": "^5.8.0",
-    "make-string": "^1.0.2",
     "mocha": "^5.0.1",
     "nock": "^9.2.3",
     "sinon": "^4.4.5"
diff --git a/src/buildURL.js b/src/buildURL.js
index 6b506b7..72feadd 100644
--- a/src/buildURL.js
+++ b/src/buildURL.js
@@ -1,3 +1,4 @@
+'use strict';
 /**
  * This method is used to build the url based on
  * the type of request.
@@ -13,7 +14,6 @@ const buildURL = {
    * @private
    */
     buildSearchUrl(options) {
-        console.log(options);
         let base_url = `http://${options.baseSvcUrl}/services/search/FindingService/v1?`;
         base_url += "SECURITY-APPNAME=" + options.clientID;
         base_url += "&OPERATION-NAME=" + options.operationName;
@@ -21,7 +21,7 @@ const buildURL = {
         base_url += options.param ? "&" + options.param + "=" + options.name : '';
         base_url += options.limit ? "&paginationInput.entriesPerPage=" + options.limit : '';
         base_url += options.globalID ? "&GLOBAL-ID=" + options.globalID : '';
-         base_url += options.pageNumber ? "&paginationInput.pageNumber=" + options.pageNumber: '';
+        base_url += options.pageNumber ? "&paginationInput.pageNumber=" + options.pageNumber : '';
 
         return base_url;
     },
@@ -34,7 +34,7 @@ const buildURL = {
    * @private
    */
     buildShoppingUrl(options) {
-        let base_url = `http://${options.baseUrl}/Shopping?`;
+        let base_url = `https://${options.baseUrl}/Shopping?`;
         base_url += "appid=" + options.clientID;
         base_url += "&callname=" + options.operationName;
         base_url += "&version=967&siteid=0&responseencoding=JSON&";
diff --git a/src/buy-api.js b/src/buy-api.js
index 99abc2c..4927074 100644
--- a/src/buy-api.js
+++ b/src/buy-api.js
@@ -1,4 +1,4 @@
-
+'use strict';
 const makeString = require('make-string');
 const { makeRequest } = require('./request');
 
diff --git a/src/index.js b/src/index.js
index e24f761..590ecaf 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,9 +1,13 @@
-//let baseURL = "http://svcs.ebay.com/services/search/FindingService/v1";
+'use strict';
 const { getRequest, makeRequest, base64Encode } = require('./request');
 const { getItem,
     getItemByLegacyId,
     getItemByItemGroup,
     searchItems } = require('./buy-api');
+const { getAllCategories,
+    getShippingCosts,
+    getItemStatus,
+    getUserDetails } = require('./shopping');
 const { getDefaultCategoryTreeId,
     getCategoryTree,
     getCategorySubtree,
@@ -60,40 +64,15 @@ Ebay.prototype = {
         )
     },
 
-    getAllCategories: function (categoryID) {
-        this.options.name = categoryID ? categoryID : -1;
-        this.options.operationName = "GetCategoryInfo";
-        this.options.param = "CategoryID";
-        const url = urlObject.buildShoppingUrl(this.options);
-        return getRequest(url).then((data) => {
-            return JSON.parse(data);
-        }, console.error
-        )
-    },
-
     getVersion: function () {
         this.options.operationName = "getVersion";
         const url = urlObject.buildSearchUrl(this.options);
-        console.log(url);
         return getRequest(url).then((data) => {
             return JSON.parse(data)["getVersionResponse"][0];
         }, console.error
         )
     },
 
-    getUserDetails: function (userID) {
-        if (!userID) throw new Error("User ID is null or invalid");
-        this.options.operationName = "GetUserProfile";
-        this.options.param = "UserID";
-        this.options.name = userID;
-        this.options.includeSelector = this.options.details ? "Details" : null;
-        const url = urlObject.buildShoppingUrl(this.options);
-        return getRequest(url).then((data) => {
-            return JSON.parse(data);
-        }, console.error
-        )
-    },
-
     setAccessToken: function (token) {
         this.options.access_token = token;
     },
@@ -121,7 +100,11 @@ Ebay.prototype = {
     getCategorySuggestions,
     getItemAspectsForCategory,
     getMostWatchedItems,
-    getSimilarItems
+    getSimilarItems,
+    getAllCategories,
+    getShippingCosts,
+    getItemStatus,
+    getUserDetails
 };
 
 module.exports = Ebay;
diff --git a/src/request.js b/src/request.js
index eec41dc..b8d86ba 100644
--- a/src/request.js
+++ b/src/request.js
@@ -1,3 +1,4 @@
+'use strict';
 let httpRequest = require("https");
 const qs = require("querystring");
 
diff --git a/src/shopping.js b/src/shopping.js
new file mode 100644
index 0000000..db12604
--- /dev/null
+++ b/src/shopping.js
@@ -0,0 +1,67 @@
+'use strict';
+
+const { getRequest } = require('./request');
+const urlObject = require('./buildURL');
+const makeString = require('make-string');
+
+const getAllCategories = function (categoryID) {
+    this.options.name = categoryID ? categoryID : -1;
+    this.options.operationName = "GetCategoryInfo";
+    this.options.param = "CategoryID";
+    const url = urlObject.buildShoppingUrl(this.options);
+    return getRequest(url).then((data) => {
+        return JSON.parse(data);
+    }, console.error
+    )
+};
+
+const getUserDetails = function (input) {
+    if (!input || typeof input !== 'object') throw new Error("Invalid input");
+    if (!input.userId) throw new Error("Invalid Input, UserId is required");
+    this.options.operationName = "GetUserProfile";
+    this.options.param = "UserID";
+    this.options.name = input.userId;
+    this.options.includeSelector = input.details ? "Details" : null;
+    const url = urlObject.buildShoppingUrl(this.options);
+    return getRequest(url).then((data) => {
+        return JSON.parse(data);
+    }, console.error
+    )
+};
+
+const getItemStatus = function (itemIds) {
+    if (!itemIds) throw new Error("User ID is null or invalid");
+    this.options.operationName = "GetItemStatus";
+    this.options.param = "ItemID";
+    this.options.name = makeString(itemIds, { braces: 'false', quotes: 'no' });
+    const url = urlObject.buildShoppingUrl(this.options);
+    return getRequest(url).then((data) => {
+        return JSON.parse(data);
+    }, console.error
+    )
+};
+
+const getShippingCosts = function (input) {
+    if (!input || typeof input !== 'object') throw new Error("Invalid input");
+    if (!input.itemId) throw new Error("Item ID is null or invalid");
+    this.options.operationName = "GetShippingCosts";
+    this.options.param = "ItemID";
+    this.options.name = input.itemId;
+    const countryCodeParam = input.destCountryCode ? "&DestinationCountryCode=" + input.destCountryCode : "";
+    const postalCodeParam = input.destPostalCode ? "&DestinationPostalCode=" + input.destPostalCode : '';
+    const params = countryCodeParam + postalCodeParam;
+    let url = urlObject.buildShoppingUrl(this.options);
+    url = url + params;
+    return getRequest(url).then((data) => {
+        return JSON.parse(data);
+    }, console.error
+    )
+};
+
+module.exports = {
+    getAllCategories,
+    getUserDetails,
+    getItemStatus,
+    getShippingCosts
+};
+
diff --git a/src/taxonomy-api.js b/src/taxonomy-api.js
index d372a4f..655f65f 100644
--- a/src/taxonomy-api.js
+++ b/src/taxonomy-api.js
@@ -1,3 +1,4 @@
+'use strict';
 const { makeRequest } = require('./request');
 const { upperCase } = require('./utils');
 
diff --git a/src/utils.js b/src/utils.js
index 7feaf9a..699af4e 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -1,4 +1,4 @@
-
+'use strict';
 // to make string uppercase.
 function upperCase(data) {
     if (!isString(data)) data = data.toString();
diff --git a/test/buildURL.test.js b/test/buildURL.test.js
index 3fa379f..603c1c0 100644
--- a/test/buildURL.test.js
+++ b/test/buildURL.test.js
@@ -21,7 +21,7 @@ describe("test building url methods", () => {
     });
 
     it("test Shopping url without selector", () => {
-        let expected_search_url = "http://open.api.ebay.com/Shopping?appid=testID&callname=demoShoppingName&version=967&siteid=0&responseencoding=JSON&keywords=iphone"
+        let expected_search_url = "https://open.api.ebay.com/Shopping?appid=testID&callname=demoShoppingName&version=967&siteid=0&responseencoding=JSON&keywords=iphone"
         let options = {
             name: "iphone",
             operationName: "demoShoppingName",
@@ -33,7 +33,7 @@ describe("test building url methods", () => {
     });
 
     it("test Shopping url including selector", () => {
-        let expected_search_url = "http://open.api.ebay.com/Shopping?appid=testID&callname=demoShoppingName&version=967&siteid=0&responseencoding=JSON&keywords=iphone&IncludeSelector=true"
+        let expected_search_url = "https://open.api.ebay.com/Shopping?appid=testID&callname=demoShoppingName&version=967&siteid=0&responseencoding=JSON&keywords=iphone&IncludeSelector=true"
         let options = {
             name: "iphone",
             operationName: "demoShoppingName",