Would this style of Tray be best?

It looks like it is designed to support some kind of small plastic clamshell for the GBA Cart.
EDITED TO ADD:As I sit here, staring at the above photo, it occurred to me that it could be improved.
The alteration would only require a few small cuts to be made, to two of the Inner Corners, so they can be Pushed Down.
The added height would allow support for GB and GBC Games.
The buyer could just leave the corners in the up position, so their GBA Games won't wiggle around as much.It already looks to be
wide enough to support GB, GBC and GBA Games in plastic clamshells, but I'm not sure about the Debth.
I got this photo off some random guy's ebay listing.