Discount on a shopping cart that allows users that click 2 or more items to get 10% off whole purchase

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
I am working on a shopping cart, I need a little project discount ( I am really decent with code but at this time and point I have to delegate this job
I need a code in order to be integrate it on a shopify,com application that allows a client while shopping to receive 10% off whole purchase. A kind of sort of message that reads if you buy 2 or more items you will get 10% off of whole purchase then when that person click on second item will get a 10% off and so on if clicking 3,4 or any amount. Here is the website Code it should be right on cart.html while clients shopping.
Please let me know how much and how long.

Please contact me to
I can give you access to account in order to see the code.

Skills required:
PHP, Script Install, Software Architecture
Hire ratullile
Project posted by:
ratullile United States
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