Tell him 1k. Tell him you can negotiate on the price though. Anything could be a scam, but you have to take each thing as if its not and take chances. As for the appraisal scam, they will tell you they will buy the domain name at the price you request as long as you get it appraised at a certain appraisal company. The scumbag in turn owns the appraisal company, you purchase an appraisal and you dont hear from the guy anymore. Of course there are other scams, new and old... however take every offer that is recieved seriously. Make your mark high, if they are truely interested they will continue negotiating. If they dont respond, they would have most likely not followed though regardless of what pricing you requested.