Money Problems

What is the best way to make money after the game.

Races in sonata city, you can get up to 10K per race with the best sponsorship

slap an amulet coin on one of ur mons and use the memory chamber (the poke ball icon in ur pokenav) and fight the rich boy( all his mons are lv 50 tho)

Like @DarkNova said only battle Gentleman Dun. He has only one Level 50 Dunsparce