More like dealing with items. Here's a crude outline of his abilities (Perks kept a secret)

Level 1 - All These Toys: Dosh King can use any items/equipment regardless of normal class restrictions. Passive Ability.
Level 2 - Borrowing This: Dosh King can take one item of his choice from his opponent. He can only use and take one item from one player at a time. Five minute cool down when he returns or otherwise loses the item.
Level 3 - Cash to Burn: Dosh King can destroy an item in his possession to do damage against an opponent proportional to it's value (which can range widely based on Deep Ground economics). One minute cool down.
Level 4 - Forgery: Dosh King can create a replica of any physical object in Deep Ground but only 80% as efficient as the target of the Forgery. Ten minute cool down.
Level 5 - Grand Inventory: Dosh King can summon and store objects in his possession regardless of their location or current use. 
Level 6 - Embargo: Dosh King targets a certain amount of players up to his level (Meaning that when he gets this ability he can target up to six players, at a max of nine) and they are unable to use any of their items or equipment, including weapons. Ten Minute cool down.
Level 7 - Gold Deluxe Model: Triples the effective ability of the target's current equipment. But also makes everything gold. Twenty minute cool down.
Level 8 - Mass Production: Dosh King can recreate any object in his inventory at 50% their normal efficiency. Each item lasts ten minutes. No Cool downs.
Level 9 - Root of all Evil: Dosh King summons a large golden coin that destroys structures or items upon contact, glowing in size until it hits a force of equal or greater mass. Hit's players for 80% and increase in damage as it increases in size. The coin itself counts as an object. Ten minute charge up and can only be used once every 24 hours.