CMS Drupal trial project

I need help with a big CMS site for a hardware distributor company similar to [login to view URL] with Drupal. The final site will include 15000 to 20000 items. I will be doing the design but I am looking for a Drupal expert to do the majority of the work, but I will be also completing some of the work after being instructed and shown how. I have a lot of experience building sities but do not have experience in Drupal. That being said, I am looking for a couple of demos with a few catalog items I will provide such as is "Flare, inverted Flare fittings" section on the site I provided above. It does not have to include many items, I am looking for minimal protype work so I can hire the right candidate. Beside the feature in 'Flare, inverted Flare fittings' I will also need a shopping cart as shopping carts will be implemented in the sie. This is a trial project and I will not pay for it. However, if satisfied you will get a much bigger project at a good price! PS. You must show previous work and must be 100 % reliable