No. A "EVE Plex" type system would never work in this game. It works for EVE because there is a massive economy that is a major part of the game. You can play this game and never open the market board to sell anything... ever! A Plex system is a wonderful idea as an alternative payment system but not for FFXIV:ARR. This is coming from playing EVE for 2 to 3 years and spend over half of that paid by Plex.