Originally Posted by
Glurp
The 25k earned achievement was (maybe still is) bugged for the first hour or so of the servers being up and was awarded to you regardless of your season earned as soon as you won a BG/Arena/RBG. Blizz put a band-aid on it by turning the vendors off which is why they are not available now.
I wonder how they will fix it, basically everyone that was logged on after the patch got the achievement so reversing it could require a rollback, which Blizzard rarely do. I honestly hope it doesn't get fixed. I like to play alts and if I could get them geared up now through Honor points it would be amazing.