I used to, when the first two books sold (a few days ago). And then it disappeared. I got two more sales, and still ... no ranking at all. Looks like I haven't sold a single copy. I have another book with a whopping 1 sale (from a week ago)--that also shows no sales rank at all.
Another book with one sale (but different publisher imprint) has a sales rank, in the 40,000's (and the sale was from sometime in December).
Well, outselling shouldn't make any difference. It would just mean that my ranking would be lower--not that it wouldn't appear at all. Even if you sell one book and you're ranked in the millions, you still have a rank.
If it's a glitch, it's hitting two books, and it's been quite a few days.
I actually was ranked in the 30's or around there in erotica, with only two sales. I guess that's not a very crowded category in Canada! Everyone's out skiing, or something. But no, I meant the entire ranking is gone. And on one book, it never came.