I agree about Unity. It was the first thing I changed when I upgraded my personal machine to 11.04.
Sorry about the confusion regarding the business model. We don't sell most of the products on our site, which is more of a shopping search engine. But, we will sell the Ubuntu laptops ourselves directly. I'll update the FAQ accordingly. Thanks for bringing it to my attention.
Edit: FAQ updated; more details will be added in due course.
What is your business model? You said on the page that you don't collected payment info. Do your sellers pay to list?