If I were you, I would get the newest version which is the blue version. The older versions have problems playing some games like Metal Slug. But, phatnom-1 is not 100% perfect, there are graphical problems, depending on the game or the converter.
image of it
is it worth 73 bucks
<a href="http://images.snapfish.com/3383266723232%7Ffp47%3Dot%3E2329%3D8%3A%3A%3D448%3Dxroqdf%3E23233%3C77%3B9335ot1lsi" target="_blank">http://images.snapfish.com/3383266723232%7Ffp47%3Dot%3E2329%3D8%3A%3A%3D448%3Dxroqdf%3E23233%3C77%3B9335ot1lsi</a>
If you aren't interested in playing the newer encrypted games, then it may be worth it. I don't think the newer KOFs (99 on up, although I could be wrong about 99) work with it.
He's legit,I've dealt with him before and he's been a member here for about a year.
That's just one of a few great deals that can be had @ various times.
I also seen a few MVS carts go for good prices sold by KB.
-BB