Auctions are still the way to go imho, but harder to come by; they've been dead for a decade, but more so each passing year.
Still, at least around Toronto Canada, there was a monthly auction at one of the bug guys .. it included any coin op or bar related equipment.. so billiards tables (the big slate-top ones!) and so on; not so many arcade games anymore, barring Golden Tee times 10 every auction .. but still some gems. And hey, if you wanted a jukebox or billiards table, that was the place to go.. why pick up some cheap immitation when you could go for a couple of months and score a great deal on real gear.
Anyway back years ago when I was active, it was grea to go on the hottest stickiest damned day.. standing arond in a dusty warehouse on hot as hell days, and most of the folks there were Operators (route guys etc), only interested in the stuff that made a buck.. so current stuff, or the real classics like a MsPac. But a few collectors woudl be there, us chumps, and we'd pick over the leftovers.. and it was fairly common that an operator woudl by a 'lot' of stuff, get himself 5 or 10 machines in a group, and not care about half of them; or they'd want only the pcboard and not the rest, etc. So it paid off big to listen to what people were saying; bring your long power cord for trialing stuff, a few fuses to stick into a machie nthat looked dead, etc.
There was a few times I scored a free cab, with no pcb.. guy just wanted the pcb, and hey, if some other idiot woudl drag the machine out of the yard, all the better
But a beat up machine woudl commonly go for $50-$100 .. not at all bad. A good machine.. a MVS machine, with a 2 or 4 slot mobo in and a few games.. that' dhit $300-$500 depending what was in it. But a cheap cabinet could be had, and then you coudl stick any game you wanted in it...
Ahh, those were the days
jeff
I will never forget.. talking to one guy while he burned a pile of machines; his back was to the bonfire, and I was looking at them over his shoulder. One super rare game, a favorite of mine (Space Duel) was on fire behind the guy, while I talked to him. *motherfuckers*