For interested purchasers, I have decided to make this "Now Selling" page. I'll try my best to update it regularly.
Computer Space's do show up every now and then on eBay so below I have an eBay Tracker.
Note: this is an old machine, and not a very popular one amoung regular arcade machine collectors. As a result, it is very hard to assess the value of Computer Space. As you can see from some of the entries in my page of Other People's Machines, the range of prices Computer Space has gone for on eBay range from the hundreds to the thousands of dollars. Clearly a Computer Space in really good, playable condition makes it much more valuable than a derelict someone found in the back of a warehouse, however, as only 1500 machines were ever built and the game was a financial flop, the chances of finding a machine in such condition after all these decades is slim. The main issue is the fiberglass cabinet, so long as it is good, there is a decent chance you can get the other parts from dealers such as www.flippers.com
Personally, my guess is that of the original 1500 machines, half of them are no longer with us, and half of what remains is beyond restoration. The good news is that likely leaves a few hundred machines still out there. My hope is to find and track them all on my site, so if you find one or buy one of the units below, please be so kind as to email me its serial number and any pictures you have. That way we can all see how many machines are still alive out there and follow their personal history.
eBay Tracker:
There are currently no Computer Space units for sale on eBay.
SN9392 is still for sale in the Simi Valley area of California. Email me and I will forward any interested parties to the seller.
Steve Winslow of retrogameconnection has advertised he will soon be making a small run of aluminum, laser cut, clear anodized, silk screened control panels. These are reproductions that Steve has built before. (I've already placed my order, have you?) His posting is listed here on Google.
There is yet another yellow Computer Space for sale (just how many were there originally??) mentioned in a post on Google not too long ago. It is Serial Number 9703 in the gallery of other people's machines. Check this link for pictures and the discussion.
Other Vendors (I have not verified the condition of this machine)