A:AnswerYes it should fit a 2DS just fine. A 3DS only takes up about half the space in the bottom portion. I own a case specifically made for a 2DS and this one is just as big.
A:AnswerAt this point Best Buy does have selection rights. It may be that there is not enough inventory, or that offering all the colors individually may not be feasible.
A:AnswerYes, this works for the 2DS, 2DS XL, and 3DS XL!! The 2DS is bigger, so it fits well. However it has extra bands in there to accommodate the 3DS XL and 2DS XL and hold it firmly in place!!