Quoted from ForceFlow:Prices tend to keep going up on pins in the $4k or less category--likely because most hobbyists are more budget-oriented and that Stern has abandoned their earlier pro pricing. So, folks formerly buying $4k pro pins are no longer doing so, and instead, looking towards older games that fit into their price range, thus driving up demand for the pins in this price range.
Pins in the $5k or more category seem to be deflating a little bit. It's probably because since the market is getting saturated with all these brand new pins in that price range all at once, so the older ones in this price range aren't moving quite as quickly right now.
You've touched on my situation. Somewhere just under 5 grand was the mental limit for me... When I could get Pro's for $4600 I bought two in one year. Taking that number, I could have combined the funds and bought one $8k game instead.
Guess what? I'll never do it. Even though I could afford it, they're just not worth that much to me.