Mmmmmm me and a mate of mine who was actually a fairly well-known entity on MAF back in the day, we used to be keen on the old high-school dumpster intercept. There would literally be dozens of 68k macs, Powermacs, etc that if they had the slightest issue, or were too old to be reasonabley expected to be sold, that would simply get heaped into the skip. Early in the piece when I first started high school, there was one of a number of periodic tech sales in the school library and there were literally benches lined with Classics, Classic II's, Pluses, and SE's, and stacks and stacks of obsolete pizzabox LC's. some had token $20 buck pricetags on them for complete working units with peripherals... and non working units anywhere between there and nothing. There were stacks of perpherals and old-tech stuff... was a modern-day collectors dream. Thats actually where i came into posession of all my localtalk gear. Was a whole lot of fun for a 13 year old Mac dude. 
They did that again maybe twice... first they opted to sell most of the PM5500/225's that had brrn replaced with new slotload iMacs in staffrooms, for around 250 bucks which back then was more than reasonable, boxed up with a clean install of OS8 and some software and whatnot. I bought one and had great fun playing with it til the FBT funked out. then probably 2 years after that, they had the final old Mac sell-off, this time selling off the first lot trayload iMacs to come into the school (which were brand new when I started there), and the unused beige Powermac desktops... Me and my friend tendered some piffling some, was like a hundred bucks between us and walked away with the lot. asnd split em up evenly.
Not long after that the remaining beige hardware in the school that found its way to the surface one day ended up n the dumpster one bit at a time, which then set the precedent... next went the last of the trayloads, then the early slotloads, then the last of the slotloads just recently... straight into the trash.
They did that again maybe twice... first they opted to sell most of the PM5500/225's that had brrn replaced with new slotload iMacs in staffrooms, for around 250 bucks which back then was more than reasonable, boxed up with a clean install of OS8 and some software and whatnot. I bought one and had great fun playing with it til the FBT funked out. then probably 2 years after that, they had the final old Mac sell-off, this time selling off the first lot trayload iMacs to come into the school (which were brand new when I started there), and the unused beige Powermac desktops... Me and my friend tendered some piffling some, was like a hundred bucks between us and walked away with the lot. asnd split em up evenly.
Not long after that the remaining beige hardware in the school that found its way to the surface one day ended up n the dumpster one bit at a time, which then set the precedent... next went the last of the trayloads, then the early slotloads, then the last of the slotloads just recently... straight into the trash.