Mining is by far, one of the slowest jobs on Era.
With the number of guns users have it should be sped up to allow them to repair.

It takes 30 seconds to get a single rock pile.
That's 1min 30 seconds for 3 rocks...
Then it takes 12 seconds to process those rocks into ores.
Total time of: 1minute 42 seconds to get 1 - 3 rocks...
Which only would make you a max of $21 - $24...
And would NOT even be enough to repair one gun.

My suggestion:
Decrease the time it takes to mine a rock drastically.
5seconds tops, because it takes another few seconds to process it.

DO NOT! I repeat... DO NOT! post in here saying "IF YOU LEVEL YOUR MINING LEVEL, ITS FASTER!!! TEE-HEE "

I do not want to increase my mining level, I want to repair my damn guns haha.