Unless you're retiring from FLL, I would recommend hanging on to old field kits for parts and practice. 

That said, old field kits usually go for $40ish on this list. 

On Sat, Jul 29, 2017 at 16:48 Thomas West <[log in to unmask]> wrote:
Hello all,

Looking for some advice:

How much would one sell last year's mat and legos for?  I see some asking on this email group....just wondering what the normal cost usually is.  We need to fundraise for some additional sensors for our robot this year.....
To UNSUBSCRIBE or CHANGE your settings, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list".
VADCFLL administrative announcements are sent via VADCFLL-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-announcements-l.html to subscribe.
To UNSUBSCRIBE or CHANGE your settings, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list".
VADCFLL administrative announcements are sent via VADCFLL-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-announcements-l.html to subscribe.