How does VSL protect the buyer and seller?
To protect the buyer, do you inform the buyer, by email, that the seller sent you an email with intention to sell and the seller had a valid account at VSL?
To protect the seller, do you withhold licence download of the libraries from buyers account until the seller reports that the payment was successfully made?
Otherwise, transactions are very unsafe and what use is the 10% commission they get on the resale? I would be very leery of buying so much from VSL if they did not provide proper ability to resell. I could have bought a used car with that money. ;)
I'm going through a transaction now.