not to beat a worn out horse, but
If it was worth the risk to you, I.E. cheap enough, you would have been posting pics and not questions. You know dirt cheap enough to where you dont feel afraid to absorb the cost of some failures.
Find that price in your head and offer it, you never know. I personally took 10K off the avg low price and offered 10k under that. the owner came back with a 3k up price and the deal was done. With a 17k buffer (17k under avg low price) I felt plenty safe enough to take it.
You have to feel like you can at least get your money back.