Just remember, this is a very common, but very popular game. There are a lot of copies that come up for sale every year. This isn't one of those only see it once in a while MVS carts... When they do come up, though, people pounce. $80 is not unheard of for this game, and on here people will give you shit for asking that much, but I swear if someone put up a cart for $80 right now they'd get half a dozen people asking to buy it ASAP.
This is one of those games it actually helps to buy anywhere else but here. Hit up some of the resellers, watch Ebay. You'd be surprised. Call up your pinball and arcade shops, old arcades, keep an eye out for local auctions. For the most part, these games are just collecting dust in someone's back room... I went down to an operators going out of business sale last year and just combed through a box of MVS carts to save the good games from falling into reseller hands
. Two Magician Lords in there, tons of good Metal Slugs and a Pulstar. I just grabbed everything of value, or I knew people wanted and sold it all here within a couple days for what I paid. You don't have to be that altruistic, but a lot of times if you want to find some of the harder to find games, stay off the net where the vultures pick the bones clean.