Supply and demand - period. MM price right now is reflected by the fact there are only so many on the market being sold. If more new games coming out are in high demand/desirable, and as a result as previous posters have noted, more put up their MM's for sale to fund or make room for their NIB game then yes the price of even MM will drop.

If NIB games coming out are "as good as" or "better" than A - List games, then there is no reason to think why the A - List games would cost more than the NIB. Won't happen over night but i believe it will. Would you rather have a MM or 2 NIB AC/DC/Star Trek/Metalica/Hobbit/whatever. Either the supply of MM increase as more come on the market, or the demand tanks as people look to NIB games that are just as fun at much less cost.

In both cases, the cost of MM will be driven down by the market. No point including A-List games that will never be sold in the equation (those about to jump in and argue that they will never sell their A-List game at any price). A MM that will never be sold by its owner has zero market value and does not play into the formula of supply and demand - it essentially doesn't exist from a buyer or seller point of view. MM is also the extreme. I don't see games like TOTAN, CV, TOM, holding their value as long as a game like MM.

I give Stern huge kudos for keeping pinball alive (seriously - thank you), but could a WOF or Sopranos really hold a candle to most of the Williams/Bally DMD's? That's the only reason we ended up with A/B list B/W games in the first place. Because there wasn't anything better coming out. That appears to have changed. And cost of ALL used games will be effected by that change.