2002 Celebrity 30'

Alright, just got back from looking at the camper. It's made by TL Industries. The inside is very nice however I was able to find some signs of water damage in the aft upper lt and rt storage cabinets in the master bedroom. I brought my own ladder so I was able to climb up and locate the water intrusion. The seam where the metal and rubber roof come together had some tiny holes in it. Seems like an easy fix. The rest of the roof looks real good. I couldn't find any other signs of leaks. It will eventually need a new awning. Needs new tires, he said they were new and looking at the tread you would think they were but the DOT date and cracks on the sidewalls told otherwise.(5yrs old) The underneath had a lot of surface rust but structurally looks sound. All in all it is in pretty decent shape for an 02. No bad odors and everything works except for the hot water line to the sink in the bathroom. New tires are gonna be at least $500 and a new awning at least $800. I offered him $3000 cash, he countered with $4200, I re-countered with $3900. He said he paid $5500 2yrs ago for it and since I was the first one to look at it and he has been getting a bunch of calls on it he wanted to wait until the end of the week before making a deal with me. Any suggestions? I really can't find much info on the camper as to the value and I really hate to pass up a good deal!