All my personal opinion:
NBA had a low run and it was a piss poor seller and even worse earner (according to my OP friend).
I've played it, and it's truly one of those machines people like or dislike no in between. I think it's kind of a turd honestly. Rarity on a game like that with all due respect shouldn't be a price driver. Look at Wheel of Fortune. Low production run, software is unfinished but still fun and can be had "typically" for ~$2000.
If you like it go for it - that's what makes the world cool is the indifference!
As far as Wade goes - man you have some odd taste

Seriously TSPP is a great game but RBION is ok and RCT is terribly boring in my opinion. BTDK is really an fun game especially with the upgraded software.
Stern has released some real shitters. In fact they've released more shitters than winners by a long shot. But it's the anticipation of the next machine that keeps me hoping Stern will rise again. FWIW I also think FG is a B class game.
BTW METAHUGH get that LOTR! Freaking LOVE mine.