I'm not sure of your location, but I've bought 3 tents (two backpacking) at REI garage sales. They're held a few times a year for members. They've all been under 100 with repairs. One needed a pole repaired and one had no issues. I've looked them up and value at around $300 so if you have a little time to spare, you can get an awesome deal!

Allison

http://4000-footers.blogspot.com/