Just spoke to the seller, Joe again.
I said that, after doing some further investigation I thought that the agreed price might have been a bit high.
He had said that he had agreed to sell to an American buyer for $1800 but there were issues with the money going through. Buyer going to the bank tomorrow to deal with this.
We agreed that he should proceed with the sale to the buyer in USA for the better price which would give me time to think about my offer.
Speaking to him again on Friday.