Ok first off you are NEVER 100% safe when buying an account, I got one that had members through PayPal (Not credit card) and no recovs and he still recovered it and I was out 2mil.
As for your information, you can't "know" they are telling you the first pass. For the recoveries they usually take a picture (which can obviously still be fake) so there really is no way of knowing for sure.
When you buy the account I suggest buying from someone who is well-trusted, but you still can't be 100% sure even then, make sure and take screenshots of everything too if you end up getting scammed.