Online Banner Site - E-commerce

A website designed and coded to sell printed media. I.e. Vinyl banners, backlit displays, large graphic printing. Simple yet informative and clean design. With coding commented. Ability for user to upload and preview custom graphics prior to submitting order. Simple shopping cart (1 product per customer each visit) Simple calculator to quote prices, based on square footage, prices change on volume and material. Small but a little complex backend to change prices per square foot and material, display orders and images uploaded by customer... Must be mostly coded in php/mySQL (maybe basic javascript for calculator/some pop up information windows) Not a rush job.