I don't know. Share the link where you saw that one sold for $5,000 and then I'd be able to say whether or not it actually sold for $5,000.
Sorry to hear this. Hang in there, try to fend off the negative remarks and eventually, you'll figure it all out since it's not really that difficult. Just remember, for every honest seller out there, there are a hundred dishonest and ignorant sellers out there. It's up to you to ask the right questions of the right people andCoin Talk has some pretty good ones as Conder101 has demonstrated and continually demonstrates.
There are other forums infinitely preferable to YouTube, but still, the chances of you learning something coin-related there that you cannot here is infinitesimal. Sure, we've a few who post just to see themselves post, and others who seem to enjoy pretending more than anything else, but in the end you'll be much better off avoiding a place where views and subscribers are generally more important than fact or reality.
Except that even in the latter regard there is still a discernible existential difference. For example: while it is an incontrovertible fact that the United States of America when taken as a whole possesses more wealth than any other country on earth, that does not mean that this given situation by any account establishes a matching reality on an individual basis for the majority of the inhabitants who make up the nation's population.