RMB

Stands for: Red Mystery Box, in the PlayFish Game, PET SOCIETY.

It's worth 50 coins, and is commonly used in various trading forums, for buying the cheapest items.

For Sale: 5 Black Ducks At 4 RMBs Each!

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GMB

Stands for: Gold Mystery Box, in the PlayFish game, PET SOCIETY.

It's worth 500 Pet Society coins, and is commonly used in various trading forums as currency, for buying items.

A: "Wanted: A Teddy Bear"
B: "I have one. Sell it to you for 3 GMB :)"

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