Run this profile (Ghom) - full afkable:
http://www.thebuddyforum.com/demonb...eteers-fast-legendary-farm-after-2-0-4-a.html
Set difficulty = Settings -> Bot -> Open the dropdown on the bottom right to change difficulty
Repair = Settings -> Bot -> Top left -> default is repair at 10%. I normally set it to 25%
Loot / Salvage -> Plugins -> Trinity -> Config -> Items -> Set there what the bot should loot / Salvage
It's best you make a fresh DB install. Download DB Beta and set up everything.
Read forum or use your own brain what's the best build for Barbar Ghom. There should be tons of build in the Musketeer thread.
Edit: It's only wasted money if you're too lazy to learn how to set it up. Many other users managed it - so I'm sure you'll also be able to do it.