I used to have a lot of mounts, compared to non-collectors anyway. But since I didn't buy MoP 'til it'd already been out a month and only just hit 90 a few days before my sub ran out, I've now fallen woefully behind on new reputation mounts. The only MoP mounts I have at the moment are the two cheaper yaks, which still kind of put me in the hole since I haven't been below 10k gold in years it feels like. I haven't even leveled my Pandaren to 20 yet, so the turtles, which would've been an easy addition, still elude me.
I think I'm sitting around 135ish then, but that's not counting any Horde mounts, and is all from one character. Which, back before account-wide mounts, is what I thought made my collection so special; a lot of people have random rare mounts on random alts, but I did all my grinding on my main. <3