I believe their philosophy is that if people are needing to repair a lot then that indicates they they're not ready for the dungeon...so they didn't want people repairing just to then spend more time banging their heads against the proverbial brick wall...
---------- Post added 2012-06-30 at 03:24 PM ----------
Are you absolutely sure about this - I thought gems were used to fill specific buy orders...and it is this which drives the price.