FWIW just one man's opinion
"fair price" for a III depends on a number of factors... a little over a year ago you could pick one up for ~$1k, market factors and the Gibson acquisition pushed asking prices up to crazy levels and now they seem to be coming back down a bit. It's certainly been a moving target WRT asking prices and maybe fair if you're taking a market snapshot today.
Are they worth it? Well that's a different question. 8)