Newbie needs feedback on a potential deal

[Ramesh Nyberg]

Hey everyone-- I'm currently negotiating on a new owner-financed 1st position, re-performing note in Alabama, single family home valued at 24k. They are asking $15k for the note and I offered 11k. He didn't want to budge from the 15k and I upped my offer to 13k.
Seller claims that the borrower is solid and was behind after being injured and missing work. Now he is rejuvenated and has made 3 ontime payments. 
Anyone's thoughts are welcome here! Thanks