It's a starting point based on the continual going prices for jupiter units on ebay. Do a search, look at the successful listings (sold).
Here's a list of the prices of listings that successfully sold. 22k, 14.5k, 18k, 19.2k, 25k, 37.7k for 2, 25k, 23k, 25.6k, 25k, 25.5k, 25k, 27k, 27k, 32k, 15k, 25k, 22k.
That's all just in the last two weeks. Most of those were the much slower (~25%) october jupiters.
That would be a realistic value.
Ok and to that i say ...
1 this isnt ebay
2 people here actually know what they are worth and dont run to other mediums ( EBAY ) hoping to rip off some unsuspecting sucker who read about bitoins on the net.
3 this was also during the last round of Hype do to bitcoin hitting 1k+
lastly lets be honest here if you thought you could continue to make a profit with the difficulty rising pretty fast you wouldn't be trying to unload it to buy faster equipment as its been pointed out repeatedly in this thread you can get faster cheaper why on earth would someone here overpay? if you think your going to get 25k for it on ebay then you would be selling it there, and while your really quick to point out what people paid on ebay (Mind you at its peak during this last bubble) you didnt point out how many of those were 1 scams 2 non paying or 3 just flat out no bids. I'm sure those number stack up pretty damn well. I've been following a guy on ebay who every 3 weeks like clockwork puts a miner on ebay it gets sold but to date not one feedback... in fact his highest feed back was for selling a cd to someone for 9 dollars and you expect me to believe someone leaves feedback for a 9 dollar cd but not for a 25k piece of equipment.