Yep, that sounds fair. Selling a $50 bonus bucks (which Marriott gave me in appreciation of my stay with them) for $25 should result in my losing my 500k Marriott Rewards points which I value at about $5000. Maybe they should go after my other assets as well. If only punishments were generally more severe for serious crimes like this we would have a much more peaceful society.

FWIW, I don't think it is worth the trouble to trade BB and had no idea Marriott even cared about this.