I've bought about a dozen different travel humi's the last several years for prizes at a golf tournament. I've noticed that the quality seems to be getting cheaper every year. I can tell from the photos that your case is of a much higher quality than the mass market ones sold online. Much higher. I'd be happy to pay 60 to 80 bucks for a black one. A custom painted one I'd go to a hundred or more.
The trays look great, best I've seen. Maybe you could offer some optional trays for I-Pads, shot glasses, booze nips, etc. I think you'd need something unique to stand out from all the Chinese-made stuff that can be had cheap on the auction sites.
Good Luck!