Back to thread subject, there's an "unbuilt" IM-18 on eBay, reserve price is $250, it will be interesting to see what it goes for. If you like, you can also "Buy It Now" for $550!!!! Me, I usually just buy the already built Heathkits, take them apart, and rebuild them from the original manuals, after replacing the more vulnerable components with new ones. The cost is about one-tenth of the "unbuilt" versions. You learn just as much, and have just as much fun. Those original, "unbuilt" kits make more sense as an investment: the moment you build them, their value falls by 90 percent! http://www.ebay.com/itm/HEATHKIT-Mo...T-/111468665877?&_trksid=p2056016.m2518.l4276 Mind you, I do have a set of unbuilt Heathkits. It is the "Basic Electricity, Basic Radio (two kits), Basic Transistors" series from 1959-1963, a total of four kits. It took almost three years to obtain them because I avoided the auctions where the price really took off. In the end I managed to get hold of all of them for a total of about $380, which is "cheap" for that particular series (the two-kit Basic Radio series alone has been known to sell for $600). I bought them to build, not to invest. More background about my Heathkit project: http://www.eham.net/ehamforum/smf/index.php/topic,98899.0.html. The first installment of the building process is here: http://www.eham.net/ehamforum/smf/index.php/topic,98921.0.html. By the way, the end product of that first "module" is building a fully functioning EK-1 VOM. It may take years to get to the end of the Heathkit "Basic..." series, given how busy "life" is nowadays. I want to savor the experience fully, and get maximum education from the "experiments" in the manuals.