There are 3 at one store 15 minutes away from me and 4 at one near my families house. Last week almost every store had it. Not that I'm looking for a Vita MS though.
There were 8 of them at a store near me then the price dropped and by that evening they were all gone.
It just shows that how many CAG's and SD'ers there are in your area will determine the availability of good deals.