diff --git a/lib/item.rb b/lib/item.rb
index 85bb5fd..5217010 100644
--- a/lib/item.rb
+++ b/lib/item.rb
@@ -1,3 +1,8 @@
 class Item
+    attr_reader :name, :price
 
+    def initialize(info)
+        @name = info[:name]
+        @price = info[:price].delete("$").to_i
+    end
 end
diff --git a/lib/market.rb b/lib/market.rb
index 12c4370..245fb9c 100644
--- a/lib/market.rb
+++ b/lib/market.rb
@@ -1,3 +1,51 @@
 class Market
 
+    attr_reader :name, :vendors
+
+    def initialize(name)
+        @name = name
+        @vendors = []
+    end
+
+    def add_vendor(vendor)
+        @vendors << vendor 
+    end
+
+    def vendor_names
+        names = []
+        @vendors.each do |vendor|
+          names << vendor.name
+        end
+          names
+    end
+    
+    def vendors_that_sell(item)
+        list = []
+        @vendors.each do |vendor|
+            if vendor.inventory.include?(item)
+                list << vendor  
+            end
+        end
+        list
+    end
+
+    def sorted_item_list
+        sorted_items = []
+        @vendors.each do |vendor|
+            vendor.inventory.each do |item, quantity|
+                sorted_items << item.name
+            end
+        end
+        sorted_items.uniq.sort
+    end
+
+        #can't figure this one out
+    def overstocked_items
+        overstocked = []
+        @vendors.each do |vendor|
+            vendor.inventory.each do |item, quantity|
+                if 
+            end
+        end
+    end
 end
diff --git a/lib/vendor.rb b/lib/vendor.rb
index 2a97a94..a630f4d 100644
--- a/lib/vendor.rb
+++ b/lib/vendor.rb
@@ -1,3 +1,33 @@
 class Vendor
 
-end
+    attr_reader :name, :inventory
+
+    def initialize(name)
+        @name = name
+        @inventory = {}
+    end
+
+    def check_stock(item)
+        if !@inventory.empty?
+          @inventory[item]
+        else
+          0
+        end
+    end
+
+    def stock(item, amount)
+        @inventory[item] ||= 0
+        @inventory[item] += amount
+    end
+
+    #this test isn't passing, going to try to move on either way
+    def potential_revenue 
+        revenue_sum = 0
+        @inventory.each do |item, quantity|
+           item_price = item.price.delete("$").to_f 
+            revenue_sum += item_price * quantity
+        end
+        revenue_sum
+    end
+end 
+
diff --git a/spec/item_spec.rb b/spec/item_spec.rb
index e69de29..8d6125f 100644
--- a/spec/item_spec.rb
+++ b/spec/item_spec.rb
@@ -0,0 +1,17 @@
+require './lib/item'
+require 'pry'
+
+RSpec.describe Item do 
+    before(:each) do 
+        @item1 = Item.new({name: 'Peach', price: "$0.75"})
+        @item2 = Item.new({name: 'Tomato', price: '$0.50'})
+    end
+
+    it 'exists' do
+        expect(@item1).to be_an(Item) 
+    end
+
+    it 'has attributes' do 
+        expect(@item2.name).to eq('Tomato')
+    end
+end
\ No newline at end of file
diff --git a/spec/market_spec.rb b/spec/market_spec.rb
new file mode 100644
index 0000000..c5185a7
--- /dev/null
+++ b/spec/market_spec.rb
@@ -0,0 +1,82 @@
+require './lib/item'
+require './lib/vendor'
+require './lib/market'
+require 'pry'
+
+RSpec.describe Market do
+    before(:each) do
+        @market = Market.new("South Pearl Street Farmers Market")   
+
+        @vendor1 = Vendor.new("Rocky Mountain Fresh")
+        @vendor2 = Vendor.new("Ba-Nom-a-Nom")   
+        @vendor3 = Vendor.new("Palisade Peach Shack")    
+
+        @item1 = Item.new({name: 'Peach', price: "$0.75"})
+        @item2 = Item.new({name: 'Tomato', price: '$0.50'})
+        @item3 = Item.new({name: "Peach-Raspberry Nice Cream", price: "$5.30"})
+        @item4 = Item.new({name: "Banana Nice Cream", price: "$4.25"})
+    end
+
+    it 'exists' do
+        expect(@market).to be_a(Market)
+    end
+
+    it 'can add vendors to the market' do 
+        @market.add_vendor(@vendor1) 
+        @market.add_vendor(@vendor2) 
+        @market.add_vendor(@vendor3) 
+
+        expect(@market.vendors).to eq([@vendor1, @vendor2, @vendor3])
+    end
+
+    it 'can list the vendors by name' do 
+        @market.add_vendor(@vendor1) 
+        @market.add_vendor(@vendor2) 
+        @market.add_vendor(@vendor3) 
+
+        expect(@market.vendor_names).to eq(["Rocky Mountain Fresh","Ba-Nom-a-Nom", "Palisade Peach Shack"])
+    end
+
+    it 'can list vendors that sell a specific item' do
+        @market.add_vendor(@vendor1) 
+        @market.add_vendor(@vendor2) 
+        @market.add_vendor(@vendor3) 
+
+        @vendor1.stock(@item1, 35) 
+        @vendor1.stock(@item2, 7) 
+        @vendor2.stock(@item4, 50) 
+        @vendor2.stock(@item3, 25)
+        @vendor3.stock(@item1, 65)  
+
+        expect(@market.vendors_that_sell(@item1)).to eq([@vendor1, @vendor3])
+        expect(@market.vendors_that_sell(@item4)).to eq([@vendor2])
+    end
+
+    it 'can sort all items in stock alphabetically' do
+        @market.add_vendor(@vendor1) 
+        @market.add_vendor(@vendor2) 
+        @market.add_vendor(@vendor3) 
+
+        @vendor1.stock(@item1, 35) 
+        @vendor1.stock(@item2, 7) 
+        @vendor2.stock(@item4, 50) 
+        @vendor2.stock(@item3, 25)
+        @vendor3.stock(@item1, 65)  
+
+        expect(@market.sorted_item_list).to eq(["Banana Nice Cream","Peach", "Peach-Raspberry Nice Cream", "Tomato"])
+    end
+
+    it 'can determine if an item is overstocked at the market' do
+        @market.add_vendor(@vendor1) 
+        @market.add_vendor(@vendor2) 
+        @market.add_vendor(@vendor3) 
+
+        @vendor1.stock(@item1, 35) 
+        @vendor1.stock(@item2, 70) 
+        @vendor2.stock(@item4, 50) 
+        @vendor2.stock(@item3, 25)
+        @vendor3.stock(@item1, 65) 
+
+        expect(@market.overstocked_items).to eq([@item1, @item2])
+    end
+end
diff --git a/spec/vendor_spec.rb b/spec/vendor_spec.rb
new file mode 100644
index 0000000..06287f4
--- /dev/null
+++ b/spec/vendor_spec.rb
@@ -0,0 +1,52 @@
+require './lib/item'
+require './lib/vendor'
+require 'pry'
+
+RSpec.describe Vendor do
+    before(:each) do
+        @vendor1 = Vendor.new("Rocky Mountain Fresh")
+        @vendor2 = Vendor.new("Ba-Nom-a-Nom")   
+        @vendor3 = Vendor.new("Palisade Peach Shack")    
+
+        @item1 = Item.new({name: 'Peach', price: "$0.75"})
+        @item2 = Item.new({name: 'Tomato', price: '$0.50'})
+        @item3 = Item.new({name: "Peach-Raspberry Nice Cream", price: "$5.30"})
+        @item4 = Item.new({name: "Banana Nice Cream", price: "$4.25"})
+    end
+
+    it 'exists' do
+        expect(@vendor1).to be_a(Vendor)
+    end
+
+    it 'can check stock' do 
+        expect(@vendor1.check_stock(@item1)).to eq(0)
+    end
+
+    it 'can stock new items into inventory' do
+        @vendor1.stock(@item1, 30)
+        expect(@vendor1.inventory).to eq({@item1 => 30})
+        expect(@vendor1.check_stock(@item1)).to eq(30)
+
+        @vendor1.stock(@item1, 25)
+        expect(@vendor1.inventory).to eq({@item1 => 55})
+        expect(@vendor1.check_stock(@item1)).to eq(55)
+
+        @vendor1.stock(@item2, 12)
+        expect(@vendor1.inventory).to eq({@item1 => 55, @item2 => 12})
+        expect(@vendor1.check_stock(@item1)).to eq(55)
+        expect(@vendor1.check_stock(@item2)).to eq(12)
+    end
+
+
+    it 'can estimate the potential revenue for a vendor' do
+        @vendor1.stock(@item1, 35) 
+        @vendor1.stock(@item2, 7) 
+        @vendor2.stock(@item4, 50) 
+        @vendor2.stock(@item3, 25)
+        @vendor3.stock(@item1, 65)  
+
+        expect(@vendor1.potential_revenue).to eq(29.75)
+        expect(@vendor2.potential_revenue).to eq(345)
+        expect(@vendor3.potential_revenue).to eq(48.75)
+    end
+end
\ No newline at end of file