Thought I'd share a cage design of mine. I wanted to design a cage that would be less than a $100 and still look pretty nice. Another goal was to make it easy for someone who had never built anything before or didn't have an army of tools; there are no fancy cuts and they can be done at a Home Depot. All you really need is a tape measure and a drill though there are a couple of things that help which are mentioned in the write up.

Also, I designed this one with cornsnakes in mind; but if you used wider melamine (16" instead of 12") should be ok for a bp. I know of several people who also increased the height so that it it became a 4 unit viv.

I did the write up on another forum; but here is a pdf of the write up so you can just print and build. If you have any questions don't hesitate to ask.

Here's a pic of the finished cage.