Black 2-Three shops rank 10, the other 5 are rank 9, very close. Rank 25 overall.
White 2-Shops are all rank 4-7, overall rank is 14 I believe. Still a bit ways to go.
I realize now that the NPC shoppers aren't only one time, I wasn't sure at first, I figured they were but it's been a while and I'm sure I would have ran out by now, so that's nice to know, now maybe I can reach Rank 100...in 50 years(Well I suppose it wont be that bad, took a little over a month to get rank 25 I think, so probably 5 or so months then if I keep my pace).
EDIT: And I just remembered the amount of points needed to go to the next rank changes every so often so...probably not 5 months.
3DS Friend Code: 3153-4608-8374
Friend Safari: Steel(Ferroseed, Forretress, and Bronzong)