you need to give more information to enable people to quote you accurately e.g.
Preferred Payment Gateway ?
Preferred Shipping Provider ?
Is Graphic Design Needed or is the Design to be supplied ?
Are customer accounts (log in) required ?
Mailing List required ?
Budget so that we don't waste our time writing an RFP if your budget is unreasonable.
and so on.
Lots of people here I am sure would like to help you but please help them by providing more complete information.