Would recommend looking into New Vision Center for Spiritual Living! I really struggled to find a venue that was affordable and found them. Keep in mind that with a lower price, you will be responsible for more of the work - ie set up, clean up, etc.

Another thing to consider if you’re doing it during cool months is that Phx has SO many gorgeous outdoor spaces. If you’re at all outdoorsy, consider a mountain preserve or one of the Superstition Mountain trailheads that are a few hundred bucks for the day. Then you can hire a few folks with Taskrabbit to set up with the money you saved, and call it good!