Good speakers, great frequency range for such a small footprint. Maybe a little bright sounding for some tastes. Requires a large room with a flat wall for best results. There are better-sounding speakers out there but the Polks have a combination of factors that makes them unique. Probably worth around $2000, depending on how much someone else wants them. Originally sold for no more than $3200 and likely were around $2900-3000.
HOWEVER, that particular guy is a crank and I wouldn't buy from him in a million years. He refused to follow through with an earlier sale because he wanted more money. Since then he's been bitching back and forth with members of the Polk board. Avoid.