Build a Website for Mac BuyBack

I want a website where people can sell me their Apple products. The customer chooses a device on the home page and gets an instant quote. We do not sell items. We do not process payments. Must have live chat and support tickets in the back-end. The back-end I can change products, change how much I offer for each product. I want this built in Bootstrap! Clean and simple layout. [login to view URL] and [login to view URL] are examples.