eBay
This is a very rare COSMAC Super Elf home computer from the 70's. This is an unbuilt kit from Quest Electronics. All the parts bags are sealed and of course, it has the RCA CDP 1802 processor in its packaging. Everything is complete to build you own NOS computer. The case is in excellent shape and I'm guessing this is from 1977 (Apples first kit was 1976) . This kit came for the estate of a University of California Berkeley professor who worked at the Laurence Berkeley Labs.  Specific info on Quest units is hard to find. Even after a fairly deep web search. What is readily available is that this unit is what many future engineers and programmers cut their teeth on. This is a true piece of computer history (The Computer History Museum has one on permanent display) To find an unopened unbuilt kit is almost impossible to find. I have a number of early computer units but I will never have the time to build this one. Try and find another one, built or in a sealed kit.

I pack things very well!