So, this is what I get for trying to be cheap.
I looked around on ebay for some cheap DS cases for my GBA games. I bought a pack of 12, and when they arrived I could tell they were really cheap and flimsy. Also, even though they had the slot for GBA games, a GBA game couldn't fit in it properly without modification. The bit of plastic on the front flap actually would prevent the case from closing all the way when a GBA game is in it. Talk about a design oversight. So, I went ahead and cut away the bit of plastic, it's the same bit of plastic that would prevent GBA manuals from fitting in the Nintendo branded cases, so now, not only can I put a GBA game in it, I can put a manual in there as well.
That wasn't the only issue either, the cases were were longer than the name brand cases, so I decided to resize the covers I used. Ended up being ok as you can see in the picture. But between the crappy quality with the cases, and the covers ending up a little blurry (not sure if its from resizing, or just my printer), I'm tempted to spend the money on better cases and remake all of them.

