domain Sealed Bid Domain Names

[RKGreen]

Hello fellow domainers,
I had purchased several domains dealing with Sealed Bids back in 2006 in hopes of developing a sealed bid auction site. That project never got off the ground and I am wondering if there is any value in the domain names themselves. Any feedback appreciated. Here is the list of names:

sealed-bid.net
sealedbid.info
sealedbid.org
sealedbids.net
sealedbids.org
sealedbids.us
sealedbidsale.net
sealedbidsale.org
sealedbidsale.us

Thanks for reading

RK Green