Here's some related domain sales that might give you an idea on value:
Domain TLD SalePrice SaleDate SaleThru
InvestClub com $2,600 Jul 06 SnapNames
PokerInvest com $2,500 Nov 05 Afternic
CyberInvest com $2,498 Sep 05 SnapNames
InvestAge com $1,000 Jun 06 Afternic
GoldDigest com $475 Dec 05 Afternic
AgInvest com $470 Sep 05 Afternic
MyDigest com $250 Dec 05 Afternic
InvestAk com $210 Oct 06 Afternic
Cheers,
BidNo