1. Sharking isn't about being the price police. It's about swindling. It's more about how then how much. 2. It depends on the conversation, if you're sitting there lying and saying your laser weapon is worth 25 keys and that this isn't that rare or etc. You'd be in the wrong, but if you say, hey your item is worth 25 keys, but I'd pay 10 keys or etc, then you'd be fine. Deception is the key ingredient. 3. Like I said, it really depends on the situation. Cut and dry, it doesn't look like your deceiving anyone, but that being said it's hard to evaluate such hypotheticals. In a real life situation, there will be logs, conversations and other evidence to evaluate and we'd be able to judge, case by case, on that.