Yeah, it's always too good to be true. A lot of people don't actually notice once they've passed the point of no return, that being the money leaving the wallet, that they're not actually getting anything in the end. That's why escrows are so important. We can never really trust someone completely unless there is a central mediator to hold the rulebook. Without some kind of power in the middle, either party can easily stand up and walk away without informing the other, without leaving a trace. Especially in the digital age.

So it is about common sense, like mentioned above. You need to understand how something must come in return for your payment.