Here is some past sales reports on the domain,
Pool net $8,900 Sep 12 Sedo 1 4 N N http://Pool.net DNJournal
Pool net $6,500 Sep 11 Sedo 1 4 N N http://Pool.net Sedo
Pool cc $2,006 Jan 11 Sedo 1 4 N N http://Pool.cc Sedo
Pool tv $5,591 Jul 09 Sedo 1 4 N N http://Pool.tv Sedo
Pool cc $2,006 Dec 06 Sedo 1 4 N N http://Pool.cc DNJournal
Pool sg $1,000 Dec 06 Afternic 1 4 N N http://Pool.sg Afternic, I think it has potential for at least .cc so maybe low $x,xxx. Hell even .sg got $xxxx, in light of this wonder if anyone agrees? To me .business makes more sense then these other extensions.