There is a scam for Lineage 2. People will set up a 'Buy' store with the message 'I quit, free items', then put some rather newbie but good items in their buy window (the kind that people would have on them). They have it set up to buy them for 1 Adena each, but players will come by and actually sell their own items for 1 Adena thinking they're getting a steal of a purchase!

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Lineage 2 Adena.