RED micro-site now out!

I was announced to be available but in-game it was never implemented or was revoked after a few days, because it's easily abused to have so many useless mastery books in mules to be turned into 20/30 books for everything. "who knows that gms does"

Were the Mastery Books tradable after exchange? That would be the abusable aspect, I reckon if they were tradable no one would ever have to buy the NPC ones, based on the number of "junk" MBs floating in any one or combination of servers. If they are untradable, I don't find it being that big of a deal.

Also, would you happen to know if trade-ins are limited per character? I know in the past, during one of the three-thousand BaM revamps one of the books was only tradable once per character.