Pete...
You brought this downpour upon yourself. The vast majority of folks here would take exception to this comment you made earlier:
I have sold many cabs on other forums.. They ,like myself like new machines in mint condition, not beat up cabs that I'm embarrassed to have in my garage.
This was surely the wrong foot to start out with... most of the folks here take pride in their machines... and just because they're 30 years old, that doesn't mean they are pieces of shit. I know that no shit cabs make it in to my gameroom and I'd imagine a good number of folks here maintain a similar policy.
Also... most of the folks here aren't the MAME type and you're surely not going to be dropping an arcade monitor and PCB in to those little guys. The crowd over at BYOAC (of which I am also a member) would certainly be more your market.
Now I don't agree with the price policing going on in this thread, but really, your attitude just egged it on. It got to a point where it was less about price policing and more about pissing "the jerk" off. Now, I am not saying you're a jerk as I don't know you, but the attitude coming from your direction was very evident from the get-go.
Next thread you might want to simply advertise your wares and cut the `tude a bit. You could have simply said "Hey, $135 is my asking price... if you've got a different idea, feel free to PM me." or "There's easily $135 worth of work in to these cabs". Anyone price policing isn't interested in what you have to sell anyway and anyone interested in what you have to sell knows the value of what it is you're selling and isn't going to be swayed by a PP comment or two.
You also could have simply reported and price policing responses and ignored them. I guarantee that if you'd done that, this thread wouldn't be multiple pages long and filled to the brim with people pissed off at you (and vice-versa).