The site has 2010 information on it still, which makes it look dormant or dead. Make it current and try and do something to attract visitors to the site.
Its a nice idea, but needs some work before attempting to sell as an ongoing.
In terms of the domain on its own it doesn't have a massive value, although FPFL does stand for Final Protective Fire Line.
Do some work on the site and you might have a site worth a decent amount.
Good luck.