Some further pay to win things have been found around legendary gems. It's now believed it's $550k if you are "lucky to fully max out and possibly millions if not.
Ignoring all that I have been having some decent fun so far. Granted I'm still not level 60. So how knows how much things are going to change once I get up there.
haha, absolutely insane, it will be interesting to see if they will ever reveal stats on what the most someone has spent on the game is...