Keybear, they surly have value. Lee dies are not super expensive new depending on what caliber but based on condition anywhere from $15-20 to $25-30 per set.
As mentioned above post them on the for sale section and see if you can get them to others that may need them or post them on Fleabay. Fleabay charges way too much between the % they get and Paypal fees so I normally won't sell there anymore. Forums are where I sell my hobby stuff.