Ill say this much, its all about saving time and labor really... cost does factor in.
The only reason we got away with boxes on blackout cart version was because shawn has access to printers to allow this kinda stuff. Not to mention the pain in the ASS it is to fold, cut, glue everything perfectly or use very thin double sided tape to keep the box together and have it look good at the same time...
I dont blame him, but yes it looks crappy... If your going to do it, might as well do the full thing and go all out. People are happy to pay for that stuff.. We sold out all copies in 24 hrs for blackout on cartridge... (48-50ish).
If i had another game i wanted to release on jaguar id do it the same way all over again.