That gold box does indeed have value, but it can vary widely.  If you put it up on eBay, it'll probably go in the $20 to $30.00 range.  If the minis have no lead rot and it looks good in the picture, these can make the value drop or climb respectively.  Then again, we've seen occasional crazy buyers, but those are usually for the really rare stuff.

Everything has value, I'd pick ot the pieces that are worth $10.00 or more and sell them individually and then lump everything else into one lot.  Take good pictures.  Have good descriptions and you can make some cash.

And who knows, you may get some private messages with offers!  List your stuff!  What have you got to lose except some outrageous eBay fees!   Just list them in the classified section.