9 times out of 10 the account will be recovered, the accounts are flipped. Sold to playerkiller > sold to customer > recovered > sold to player killer and so fourth.
I would never, ever recommend purchasing anything from large scale gold/game shops such as playerkiller.
The reason they have the email left registered for 50 days is so that, if hypothetically speaking, the consumer were to charge back their payment (PayPal) they would be able to recover the account instantly.