What are master orbs for?
Master orbs aren’t necessary to play the game. They have two functions: convenience upgrades and auctions. Convenience upgrades are the following: – Master Training ranks (reduces minimum age for Trained Pokemon by 20 mins for every 10 orbs) – Advanced Petting ranks (gives you and the owner more Poke-bucks each time you pet a pokmon: +1 Poke-buck for every 10 orbs) – Poke-bucks (a certain amount for every 10 orbs – based on criteria I’ve not figured out yet) – Send credits (toward unlocking new pokmon for sending or training (does not circumvent training cap), +5 credits for every 10 orbs) Most notably, though, you can use them for auctions. You need a certain amount of orbs to qualify for auctions (1000 of them for town auctions), you pay the auction registration fee in orbs (100 for town auctions) whether you win or lose, and the auctions themselves run with orbs. For example, Pallet Town was auctioned off for 16958 orbs.