if they sold why would he have calls blocked or not answer?
I don't know if they sold it or not, but sometimes when people sell something for a way-low price they get inundated with calls and messages all day and night, they get tired of saying "it sold", so they just stop answering, or in the old days they'd unplug the landline except when they wanted to use it. Many people will take down the ad or add new wording saying it has sold, so something else may be going on with this guy.
It's craigslist, he may be busy burying each buyer that came by with $200 in their hand that he ripped off.
