Below is a mockup for a company called Makeably. Makeably connects independent makers and buyers of low-volume, customizable products. When I first spoke to them, they were facing some "barrier to communication" issues. Buyers and sellers were having lengthy back and forth discussions before a product finally got made. Naturally, a few of them lost interest, and the development of the product never moved forward.
When doing these mock-ups, I was presented with an interesting problem: find a solution that would simplify communication between buyers and sellers, and design a page that didn't "feel" like an eCommerce page.
You can see the original Makeably page here.