[squiffy]

So Seller has come down from 279,900 to 259,500 as is.

And you are really offering 240,000 as is (250,000 with seller to pay for 10K roof.)

So you are about 20K apart. What does your agent say about the home owner. Is seller getting any other offers, have there been any other showings?

If the 259,500 sale price offer is reasonable, then eventually he may sell it for more than 240K. But only time will tell.