I just got done dealing with a similar issue with my fiance's 03 Oldsmobile Alero 4 door.
She was side swiped by some ding dong towing a 35' 5th wheel camper trailer with a a chevy silverado 1500 single cab with stock mirrors. The driver didn't even see her in the left lane and pushed her into the concrete median. He was sited for failure to yield, improper lane change, insufficient towing equipment, failure to signal, etc...
His insurance state farm "appraised" the cars damage at $3,458 and said they would only cover impact damage on the passenger side! WTF!?! Then they transfered the claim to their total loss department and offered us $3800 and keep the car or $4100 and give it to them. She went ballistic and told that adjuster to go **** himself with that number and call back when he had a realistic figure. He later offered us $4100 and keep it or $4800 and give it to them. Again extremely pissed she told them where to shove it.
We then called Nationwide which is our insurance and explained the situation since we have full coverage. They sent out there own adjuster, took pictures, photocopied the "estimate" state farm wrote, and were extremely pissed that state farm was attempting to only cover the passenger side of the damage. They called back the next day telling us that the new estimate was $5380 in damage and it was transfered to their total loss department. They offered us $5100 and keep it or $5900 and give it to them.
According to Nationwide since we have full coverage and chose to go through them State Farm is now responsible for the $500 deductible and our rates don't go up even though it's a total loss due to the fact that the accident was not our fault. We feel that $5900 is more than reasonable and taking that money and buying either a 2000 F250 super cab long bed with the money from a friend, or one of several F150's extended cab 4 door short bed's that we've been seeing for sale recently. We feel Nationwide went above and beyond our expectations and frankly I hope I never have to deal with State Farm ever again.