Dealwithus is an online portal started by students of IIT Bombay which gives cash back to the customers. IT is 100 ficient in maintaining customers cash back details and providing them with full compensation on time. The customer has to visit the e-commerce site through Dealwithus rather than visiting the e-commerce site directly. We have developed an analytical tool which uses it's database trends of over 300 e-commerce websites to provide customized advertisements. This tool is modeled on the principle of Google ads and which will have features like recommended suggestions and combination packs for cash back offers.