Yeah, it was about a year ago, but this one vendor had a few mid-80s SS mecha (I can't remember which ones) for $200 a piece. Each one was either mint or new in box and complete. Not sure how of a good of a deal it was at the time though.
I don't know if it's worth front-paging, but Pittsburgh's Steel City Con is this weekend. Unfortunately there isn't any Power Rangers Alumni in attendance this time around, but the couple hundred vendors more than make up for it. I've personally seen tons of Power Rangers stuff there recently and have even spotted some much more rare Super Sentai mecha (boxed, pre-zyuranger stuff).
I've made a thread in general discussion if you would want to link to it.
So I've compiled a large archive of the ACG cards for what we're working on. Had to use some japanese Rangersrtike cards for a few of the obscure guys. The only thing I need now is the Super Megaforce rangers, I think I can just use the morphin madness artwork there.