Mine cost $10K brand new and is still in great shape. It has all the basic amenities from A/C on top to fairly large holding tanks on the bottom, and does everything we need it to do. As per previous comments, a little maintenance goes a long ways. It's all wood with a rubber roof and aluminum skin, and NO leaks, rot, or mold after 13 years of permanent weather exposure.
Though I agree that there should be better practices and more oversight at certain levels, I'm grateful that I could get into a unit at that price.