Why don't you prepare one yourself? You just need some CPU integrated liquid refrigeration, a small case and if you don't need GPU rendering power, then a small GPU, I don't recommed integrated ones, I prefer a small external one, but it's a personal preference, apart form that, a bunch of ram, a small hard drive, and you have it, now acquire 10 of this, and you have your own personal renderfarm, maybe no 80 nodes, but it's really powerful.
Cheers.