I have about 24 I got myself (saying about because I'm not 100% sure I didn't impulse buy 2-3 of them for cheap in my starter days), with 13 being 5 digit. I did however, grind quite a lot for 5 digits, afterwards I got exhausted and slowed down a lot.
But yeah, if you play regularly, there will be quite a few WWs in your den after a while. Getting pretty ones, however....
(I will 100% keep 3 of them and 95% 3 more, but even those last 3 are more emotional attachment than beauty...)
Considering I don't grind I have more than I thought I did. 3 were given to me from.a Christmas giveaway and they were getting rid of everything on their account