Ok, so after being inspired by awesome threads like Jango72's, I decided to try my hand at one of these. I don't have a lot of money right now and I enjoy making things, so I thought why the hell not. It's actually been a lot easier than I thought, just time consuming. The entire thing is going to be made from foamboard, thin plastic, and some pvc. Total cost so far is a little over $20 I think. You could definitely save money by just using things from around the house, like cardboard.
And yes, I am using WOF's templates. Never would have gotten started without them. They're totally awesome and require very little modification.
Please feel free to ask questions or to offer suggestions. I was hoping this thread could be informative to others. I should have more pics up soon.