domain (expired-domain.net) any value in 10 year old+ hyphenated nets

[Jimmy.com]

Thinking of letting a load of domains like this go

computer-hardware.net
creative-events.net
expired-domain.net
fine-line.net
mountain-view.net
new-invention.net
the-earth.net
website-host.net

Is there any value to some of these clever SEO guys? Would the key word combos and the age make these attractive to the SEO market or not?

 

[Casey L]

If they've expired then they aren't 10 years old so they probably lost any seo advantages they had beforehand, I would say no

 

[Jimmy.com]

i can still renew them, expire-domain.net is just one of the domains.

 

[Casey L]

Unless they have traffic or you plan on making solid websites on them then I wouldn't renew them

 

[RU]

I would let expire .. No value sorry.