Since we seem to have crossed over into talking about the 3.5 Altman's, I'll throw in my little bit of knowledge about them. Over the years, I bought about 18 of them from Altman's rental house. They are great little instruments, which also have the ability to use different focal length lens...
I would say that ebay "solds" is your best guide. Search for Altman 360 and click on the Sold items box. Looks like they're going anywhere from about $30 - $75 plus shipping. I have more than a few 4.5 mini zooms from Altman and some 1K lekos that I'd give away cheap too. In NJ.
Late reply, but I have to disagree wit ST, as i have found, especially in older 360Q's that the HT colors do seem to last a bit longer. Your mileage may bary.