For some reasons,
multi-carts that have four or less games on them
usually turn out to be very good. The reason is
simple: if you're going to put only a few games on a
multi-cart, they better be good or they aren't going
to sell. In other words, who the heck would buy a 4
in 1 with crappy games on it when you could get a 82
in 1 with a bunch more crappy games?

This 4 in 1 has the rare Tekken port.
So, yes, 4 in 1 YH is great. It's got a
very hard-to-find game on it: Tekken. The
port is likely the same as Street Fighter,
but the sprites have been vastly changed to make the
game look and feel like Tekken. And it does.
Tekken game doesn't play as well as Master
Fight IV, the best in the Master Fighter
series I've come across, but it plays better than
the original Master Fighter. One thing you
have to watch out with when buying ports is whether
or not the controls are going to be rigid,
especially when you try to jump forward and
backward. Tekken is mostly smooth. This also
has Street Fighter: 12 Peoples and Mario
12, two very unique games.
I bought this cartridge for $20 on eBay. Most
people don't know about the Tekken port,
since Street Fighter is the most common. I
imagine this could sell as high as $30.
Here's the games list: