I browse eBay before I head to bed every night and today, I looked at what was going on with PCI Powermacs (7500/8500/8600/9500/9600 in specific) and there were not that many machines to be found (mostly just parts from units).
Did they all turn to dust since the last time I looked?
They've generally not been collectable which means people haven't saved them or don't bother listing them.
I've sort of been looking for a desktop (7500/7600/7300) casually (i.e local collection, cheap) for a out 5 years and haven't seen one. I'm not bothering because I have a 7600 logic board and they're basically just an 8500 with bits missing, but I do a fair amount of testing cards and end up using an 8600, which is a bit of a faff to put cards in and out of compared to the outrigger case. I'd use a beige G3, but I want to do my testing in the 604 era machines.
That said, if you're not looking for a specific model machine, and not offensively unwilling to spend much money on one, there are usually a few for sale on UK eBay.
The 8600/9600 towers are absolutely solid. The outriggers do tend to have some problems with the power button and the slot cover, but are mostly OK unless abused.
PSUs are PSUs and I've had some fail.
8500/9500 cases are some of the most fragile and bits fall off them if you look at them, unless you're extremely lucky to have one that hasn't gone brittle.
