This Diplomat Mahogany watch box with black interior is the best you can get in the under $100 category.  It is solid and heavy with excellent fit and finish.

The interior, being sort of a charcoal black stays clean, a nice bonus if you're going to be in it every day.  The added benefit of the dark interior is the amazing contrast which really shows off gold and silver watches.

We own several watch boxes in our home.  This is the only one we own more than one of.  It is a great box and well worth the money.

If you are not sure which watch box is for you; buy this one.  If the dark interior worries you, well they offer the exact same box with light cream interior as well: ASIN: B002CVUO7Y