2- Every customers have limit to buy for each product. This limit is two for each product. Customers can not buy more than 2 items for each products So you should put a limit for quantity. However if shopping cart is under $100, customers can buy another type of products.
For examples: * There are two MP3 players and total price is $50 ----> Works
* There are two MP3 Player $50 + 1 Iphone case $7 + 2 T-Shirts $30. Total price is $97 --- Works
* There are 1 Tablet PC $75 + 2 T-shirts $30 ----> Does NOT work! Total Price is $110 and Total price can not be more than $100
* There are 2 Tablet PC$75 ----> Does NOT work. Because total price can not be more than $100
*Lets say customers buy two t-shirts $30(Product ID 001) and 1 i phone case $7( PRODUCT ID 987) and his total shopping cart price is $37. After that he wanted to buy exactly same tshirt again (Product ID 001) ---> It does NOT work. Because customers can not buy same products more than two.
*Lets say customer buy two t-shirts (Product ID 001) $30and 1 i phone case(PRODUCT ID 987) $7 After that he wanted to buy a tshirt again $12 (Product ID 005) Total Price is $49 ---> It Works. Because He bought 3 tshirts but not a exactly same t-shirt.