The hoop coop filled my needs:That's awesome! I love the idea of a good hoop coop. It's likely the best answer to OP's issue, I just think that some people aren't willing/able to build their own structure (no matter how simple it might seem). Perhaps OP is more than capable of pulling it off. It would definitely help with the budget issue if they could!
- Lower build cost
- Lesser skill level
- More ventilation