Tons of Money
You can get loads of money by giving an Amulet Coin to your first Pokemon. Then, after beating the Elite 4 and completing the Celio mission, go to Five Island. Go surf up to Resort Gorgeous. Go right and go to the bigger island. Go to the extreme left. Fight Lady Jacki. She has a Lv.48 Hoppip and a Lv.50 Skiploom. Beat her with a Flying or Fire type then she will give you $20,000 if you gave your first Pokemon the Amulet Coin. You can use the VS Seeker and keep challenging her to get loads of cash! I got $500,000 through this method!
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