Custom T Shirt Website

I am looking for a website with the functionality of [login to view URL] and the look of [login to view URL] It needs to include a price calculator similar to the one found on [login to view URL] and checkout system. The website should be very SEO friendly, secure, and error free. Payment will be given via escrow, 30% at the halfway point and 70% at the end. When you bid, you must include your past works.