Quoted from absocountry2:

I have not really found a better list to use for bang/buck machines. No list is going to be perfect, but it is pretty good for ideas.
If you look around there are several ranking lists. There is an EM list, staff ranks, specialist (those with more than 50 ratings) rankings and others.

Quoted from NPO:

I'm going to say it: If you're browsing eBay for Pin prices, you're doing it WAY wrong....unless you're looking at Completed Listings. Take a look at some of the more popular titles here at Pinside.
Demolition Man: NOTHING has sold for over $1257, and that goes all the way back to December 16th.
BSD: One listing sold for $2700 - ALL OTHERS sold for $2k or less.
HS2/Getaway: One has sold for $2222 - ALL others have sold for under $2k.
TFTC: FOUR of them have sold for $2200 and up - all others are below $2k. [Sarcasm] It's got that nasty lil Data East badge on it, so it's really worth about $1400 [/End Sarcasm].
What I find interesting is the money some games go for here and they're cheaper on eBay... THAT makes me nervous....
Mr. Pinball's Classifieds and the upcoming pinball shows = way more accurate pricing than eBay.

[sarcasm]
But I'm an American - I am entitled to and demand instantaneous and immediate gratification!
[/end sarcasm]