CRS Products database

I need a a system that is currently half complete. It is like an online shopping mall that shows all our products and their specifications. It allows trade customers to apply for trade membership where they will be able to view trade prices for the products whilst normal members and the general public will be able to only view the retail prices. We specialise in selling refrigeration door seals which have many different sizes to suit a range of brand, model fridges. Often 1 seal with the same properties ie, colour, dimensions, extrusion type will fit many different models of refrigerator. Some seals are "genuine" and we buy them in and others we manufacture. There is different pricing levels for commercial seals and domestic seals. So far I have a data base written in SQL which has components of its design missing which I would need completed. And I also have most of the design for the website done. The website designer was not interested in using the SQL code or database from the former programmer and was having another programmer develop that part for him before he left me hanging. He was having me begin entering all of the data in an excel spreadsheet that he said he could upload to the website. The website is at [login to view URL] if you feel you could add something of help or complete the system for me.