How Much would i get for a Game Boy Colour With.......?

I don't think you really have a choice. You kind of have to keep it for the memories since, as a general rule, gaming specialty stores don't buy GameBoy Color games anymore. Maybe if you have a very rare title they'll give you a modest bit of cash for it, but other than that I'm afraid you're out of luck. And by the way, the GameBoy itself will nab you around five dollars if you sell it online, but I can gurantee that no game store will buy it from you.