I've vended this much: 8,439/20,000 and for some reason the event came up that I had vended up to 5000. It didn't lower it back down to 5000/20,000 and it didn't add to my number of achievements.

But I was just wondering why it does this? Because I've noticed that it does this for other users too...

Did they change it or something? Because for some reason I thought it used to be 10,000 items.. Hmm.

There is still a 10,000 level but you don't see it until you earn it.

Right and I haven't reached it yet but for some reason it showed the events for the achievements the precede 10,000. I just thought it was odd.

According to Vulgar's Achievement Tier thread, there are supposed to be 8 tiers... including the ones that are giving you an event but no achievement. So I'm guessing that they either changed it, or it's a glitch.

Yes, I'm starting to think it was a glitch... because it evented the achievements when I hit 8,439 vends.

It's just a glitch D:

I've heard (as other users have told you already) that they appear once you get to the specific tier. If not, then you should create a thread in the bugs section. D:

i wouldnt worry about it too much as long as you can see the next acheivement...