Philo, It honestly depends on the quality, how clean/sharp the box Is, and how cheaply you can ship. The shipping will eat the seller alive which he has to pass on and that makes a bigger Item such as this difficult to sell.
You might be able to get $20.0 for the box but It will more than likely cost you $15.00+ to ship. There's a market for sure, you simply have to find the right buyer.