Rusty

Rusty the Janitor is an NPC in the Gold Mine. He sells back one-time rewards from quests for a certain amount of coins.

If the player is or higher

 * Hi, I'm the janitor of this mine.
 * You would not believe how many people leave ingots and stones behind them!
 * It drives me insane, but at least you unlocked.
 * It makes my job easier, but despite that, I still find so many items on the ground.
 * Maybe some of them are yours? In which case I'll let you buy them back.

If the player is below

 * Hi, I'm the janitor of this mine.
 * You would not believe how many people leave ingots and stones behind them!
 * It drives me insane, but at least you'll unlock at.
 * It makes my job easier, but despite that, I still find so many items on the ground.
 * Maybe some of them are yours? In which case I'll let you buy them back.

History
Rusty