I understand the purpose of preventing RMT accounts moving large amounts of gil around but 1 million gil restriction is absurdly low considering the life of the game so far and the amount of players that have accumulated well over 1 million by just playing your game within the rule set.

I wouldn't doubt the RMT accounts already have characters on every server running bot programs and have already accumulated the gil they try and sell. So I doubt the restrictions are doing much more then just being an inconvenience and costing you $$ by deterring someone who's accumulated more gil then your proposed restrictions.