I have a client with less than 100 customers and less than 50 products. They would like to setup a customer login on their website. Customers should be able to login and see their last order (or perhaps last couple of orders). They can then change the quantity or simply re-order. If the price has changed since their last order, the total should auto update on the new order. Once they submit the order, an e-mail should be sent to the sales rep who will then call them to confirm and make payment arrangements over the phone.

Surely there is a pre-existing solution out there that could simply be customized to fit our needs. Any suggestions?