I think it would be a fun Social Experiment to set up a few of these type sales and use it as an educational tool... Similar to the group that was running fake-fake email fishing scame that, after the Link was clicked, took the person to an educational page explaining some ins/outs of Razor Pricing.

I've never had the issue with razors that I sold as I just don't ask that much but we once had an Ad for a good condition swingset up locally for FREE and 30 days later still no sale... I changed the Ad to ask $100 and it sold the next day and even after I explained to the buyer my situation and that she was more than welcome to it for no charge she insisted on paying $50. ??!!??!!

I would love to know what drives these results... Maybe competitive bidding but seems unlkely that would be the whole answer.