Domains that are priced right for a reseller market move. Almost 17% of my portfolio was purchased here. People that post a domain they handregged yesterday for XX,XXX probably will be disappointed. I had a 5K sale recently that I purchased here for $150 a few years back.
Not always the wholesale market is tuned with the retail market, but if one understands what people are looking for here it's definitely possible making a good profit.
The point is that often nP investors acquire names for the retail market and liquidate here, but if one acquires names for the sole purpose of reselling here is another story IMHO.