The Mirrorball Man
Aventurier
I see nothing wrong with that. In fact, I'd love it if I could buy something from WotC for DM appreciation month.
Something I find tacky is WOTC declaring it's DM appreciation month and then suggesting that we celebrate this by buying stuff from them.
That's just in bad taste.
But the idea is to buy the beers so the GM can drink a toast with you, and it would be well, tacky to drink a toast to oneself...Or, you know, raise a toast to you own GM.