Easy money!!!
First make sure the first Pokemon in your group has an item to double their money earned in battle (amulet coin,luck incense etc). Next go to a richboy,gentlemen,socialite or lady and battle them. They are usually pretty weak so they shouldn't be too much trouble. If your Pokemon in the first slot in your team enters battle holding one of these items and you win you'll get double the poke. Using this on any of these people should guarantee you around 10,000 poke. Using this on the elite four will earn you 20,000-40,000 poke. Once you have beat them come back after a while and use the vs seeker to gain additional cash. Some people you use the vs seeker on will get tougher so be prepared.
It's a very effective way to get cash quick.
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