For Sale Value?

A friend found a camera stashed away in the attic and was wondering what it might be worth. It is a 1936 Kodak Vigilant Junior in mint condition. It takes 616 film. The lens is Kodet F12.5 to F32. Any idea what this would be selling for.

The best way to get a quick estimate is to search completed sales on ebay - specifically the ones where someone bought the item. It looks like these go for $5-30.