What's that rule of 3 thing? I think I first saw it on here.
It's like there is this triangle, and each corner is 1) Fast 2) Cheap 3) Good
You can only have two of those corners at a time. ie:
It can be fast and cheap, but it won't be good.
It can be good and cheap, but it won't be fast.
It can be fast and good, but won't be cheap.
To answer the OP's question, I'll ask another: is there something wrong with buying a regular dog cage? They aren't that expensive (especially if you are wanting to pay someone to make one). Check out craigslist, I'm sure someone in NY is trying to get rid of a dog cage.