A happy ending.

Well I decided to email the guy that offered $400 (I didn't want to make an official counter offer since that would void his offer). I simply said "Is $400 the best you can do?" He emailed back and said $450. I changed the price to $450 and he bought it within minutes. He paid promptly so I shipped promptly. My running total for this one "dive" is now at $530 (not including the other little things I'm going to take in for scrap this weekend). Not bad for a part timer.

Thank you all for your kind words and the advice.