looking for an idea of what this might be worth

[srm970]

i am thinking of selling one of my rifles..  just trying to get an idea of what it might be worth.  i know what they go for new.  it is a .50cal.. and comes with the .58 cal carbine barrel as well..  would love to have your opinions.  ohh it is a cabelas hawken  1 in 48 on the .50.  and 1 in 24 on the 58 i think..

thanks.
shawn.