A website similar to mrrebates.com

We want to create a website which has the functionality inspired by mrrebates.com. It is a rebate website which lets you to get some percentage of your cash back. To use it, simply you need to login to mrrebates and then choose an online store to shop. mrrebates will redirect you to the online store and you will shop like normal. After you buy some stuff from that store, you can see your savings at [login to view URL], so there is an integration between each websites and mrrebates. Before giving a bid, please consider everything and then provide me with the time & money required to complete the project. Service integrator will be also responsible from design. Thanks.