There is a local tech, college, government ewaste facility near me.

I was recently bidding on fifteen 2u rack servers, fully equipped ready to plug and play essentially, but 5 years old. The entire lot sold for 700 bucks.

A second lot sold at the same time, twelve of exactly the same server slightly newer but less storage (only 50TB) that lot sold for 900.

edit Just Checked currently with 9h left there is a lot 25 OptiPlex computers (sans HD) for 135 dollars.

My college doesn't actually resell computers, but that's because a local prison has a program where the inmates refurbish old equipment to send out to low income schools. But, considering most of this equipment won't be usable, I expect us to start selling it.

Based on the prices we sell other technology for, probably somewhere under $50. My guess would be $20.

I still have some stuff from a local oil and gas company, a collage, my local library and the national land survey org. I paid all of nothing for them, since these cost them money to dispose of.

Don't expect HDDs in them but surplus equipment is great.