More skill training
- Take away Survival from nearly everyone; offer it for 500 gp in Last Hope or Thalore-town, with another 750 gp to bump up mastery
- Lower mastery values for Combat Training by 0.10 across the board; sell +0.20 training in Last Hope for 500 gp
- Sell individual talent training, all the stuff you could get from Escorts, for 750 gp per generic point
- Sell access to alchemical imbue gemstones for 200 gp per tier of the gemstone (so embedding a t5 would cost 1k gp). Body armor only, of course.
Sell a limited Golem (can't level, can't be healed) companion at Shalore-town.
Treasure Maps
Sell access to a couple of high-XP dungeons. In terms of balance, these would function like less random Farportal realms. This would also be a neat interface for quest addons to hook into, since each purchased quest would have an opportunity cost.
Highway Robbery
Allow the player to buy a way out of an encounter with Adventurers (not Patrols though).