To scam a scammer, you only need about 20k cash.
First find a high level doubler, preferably one with good items. When you get to that person you trade them 5k. They will double this amount of money. Giving you 10k. You then give them the 10k. They double it to 20k. Sometimes they will no longer accept you trades now. If they do give them 15k. You can continue this process for as long as you want, but usually after you put in 50k they will take the losses and leave with your money. I would suggest stopping once you get 50k.
The highest I have ever gone is a 500k profit. (the guy had dragon (g) and 2 party hats)
First find a high level doubler, preferably one with good items. When you get to that person you trade them 5k. They will double this amount of money. Giving you 10k. You then give them the 10k. They double it to 20k. Sometimes they will no longer accept you trades now. If they do give them 15k. You can continue this process for as long as you want, but usually after you put in 50k they will take the losses and leave with your money. I would suggest stopping once you get 50k.
The highest I have ever gone is a 500k profit. (the guy had dragon (g) and 2 party hats)