I do agree that vT are way to easy to farm (I buy a lot more diamond than I mine nowadays) and the amount per kill should be lowered. The suggestion SGT_ADZ made about ores is bad for two reasons. First, it would cause hyperinflation due to the massive amounts of vT everyone would be gaining all the time, which is exactly what reducing kill-based vT would help solve. Second, it would make all mineral and mined material shops obsolete, because people would all go back to mining it so they could get more vT with the ore, rather than spending vT to acquire the ore, so buying the items would become inefficient except in the most time-sensitive situations.