Only payment I'll accept is PayPal.

I accept any PayPal as long as you're willing to put the follow message as a note

"This is money owed for a virtual good that I have already received. I will never, under any circumstances, claim/charge this money back. If I were to claim/charge this money back, it is an attempt of cheating this person out of his owed money and the money should remain with this person."

Or send it as a donation.

We can do increments.

Currently have 30b in stock.
$2/1b