How rare is this game?

I was shopping in Manila, Philippines.
And I came across this GBA game called: An American Tale: Fievel's Gold Rush.

Being a big fan of the cartoon/ movie I picked it up (naturally) and I went online to find some information on it.
And damn it was hard, I tried Amazon.com to see if they had the game stocked, but they didn't even have the game at all to begin with.
I went to Ebgames.com and they didn't have it either.
So I'm just wondering does anybody know this game? And is it really that rare?

http://www.gamestop.com/common/images/lbox/160119b.jpg
An American Tail: Fievel's Gold Rush

well im not a game genius but ive not heard of it.

Didnt know that game was rare at all???

Its the mouse from old coutnry!
So thats how you spell his blasted name...
Whos the maker? Maybe the companys seriously rare.

Sounds rare to me.