So as the title says I'm needing some advice from someone more familiar with the pricing and value of arcade machines. Someone at our local flea market has a two-slot MVS machine they're looking to get rid of at $550. The machine works well, though he did tell me it wasn't working when he first got it and needed some "tinkering." It's also missing the front keys. It currently has Metal Slug and Samurai Showdown 3 in it, which he said were included. The cabinet itself is somewhat worn as is to be expected, but not in terrible condition. One of the side vinyl decals will need to be replaced, maybe both, but the marquee is in good shape.
I've been semi-interested in getting an MVS for a while, and this seems like a solid deal from what limited price info I can find, I just would like an opinion from someone who is a little more versed.