multi layer shopping cart . we need a shopping cart system for 10,000 items
most of which we have in our database , this will be a 4 part shopping carts based on customer log in info .
we need 1 primary site no pricing , 2 site for wholesale clients , 3 site for online cleints .
the site would incorporate a few types product lines .. we care everything IT . which is a lot of items , need guidance on product layout and getting it to the people (ie clients)