New Wood Box Storage (raw cards) ideas?

[jp1216]

Looking for some advice. Presales will come soon. My father-in-law has sold dozens of wood boxes over the past year (mostly on Net54 at a discount). He has just finished a prototype of a raw card box designed to hold 400 Ultra Pro standard 3x4 top loaders. Very similar to the solid oak 'T206' Tobacco boxes sold in the past. Strong hinge. Key lock.
The prototype has 4 rows, green felt inside & bottom. Size is about 14" x 9" and 5.5" high. Nearly the same size as the Tobacco boxes, just a bit higher. Holds graded cards sideways too.
Looking for feedback before these are offered for sale. Size, design etc. Please post ideas etc. The plan (like with past boxes) is to build a dozen or two. No prices yet. Shipping keeps going up, however. I will post on B/S/T when they are finalized. Just looking for ideas and suggestions. I expect a full production run to begin in March 2013.
His website is: http://www.dakotawoodcrafts.com. No card boxes available right now. Custom orders are always considered too.