Need advice on House I found this is weird.

[Jerry D.]

Have seen this house for at least two years sit vacant and finally this weekend a sign is in the yard for sale by owner. Longstory short look at the house and everything is great but a small issue with roof that needs to be replaced and some carpet. The guy was asking 59k to buy or owner finance for 69k. I told him I was an investor and turns out so is he. Somehow he buys properties in bulk from banks and then unloads them. Some unseen. Not sure how he does this but I digress. The weird part is I looked at the house twice and we came up with a price of 45k if I don't do an inspection but 50k if I do. He says he doesn't want to tie up the house for a period of time incase another buyer wants it. At 45k it is a pretty good deal. At 50 it is still a decent deal. I even offered a 500 option fee so I could do the inspection and he said no. Those were his two prices so take it or leave it. I am sure he just wants to flip it but its weird that I can't do an inspection but for the other price. All foundation looks good only thing that would maybe be a problem is AC could not work though it looks fine. Roof was ok from inside I looked in Attic and I could turn the water on myself. Anyone ever dealt with anything like this. He basically said as is no inspection for 45k and 50k if I want an inspection. House is probably worth about 65-70k.