I went looking for this case at 2 of my Targets, and came up with zip. I'm going to go back on Wednesday, and pick it up after work. It looks like the perfect case for me!
I just was at a Target in Cottage Grove, MN and they had 1 of these cases as well so it does seem to not be a case that is regional or anything (I bought mine in Baton Rouge, LA).
Both stores did only have 1 case though, so they may get stocked in limited supplies. Target does seem to group all PSP/PSV(and maybe PS3) accessories together, so be sure you don't overlook it. Also, given the dearth of early Vita action at Target (they seem to only want to sell games starting Wed) some stores may just be late getting this stuff on the shelf.