That was runs for free with Perky Pugs I believe for AotC Friendship Birb.
We wouldn’t advertise a group selling them for gold as that is considered an unsupported transaction. Selling/Buying runs for gold is very much an at your own risk kind of thing as we are unable to support these kinds of trades. There’s been quite a few posts on the topic and I don’t have anything new to really add to what has already been said in past blue posts.
TL;DR: Allowed, but not supported and for in game gold only.