I wouldn't try to cost Stone Age gamer sales but one thing that should be considered if you choose to go with their cases is that they are much larger than Universal Game Cases. Wiggy did a comparison somewhere on TCP between Bitbox cases and UGCs. If you're trying to maintain a unified collection and already started up with UGC, it's something to keep in mind. Ask Wiggy where he posted his comparison.
Just a note: If Stone Age Gamer had designed their cases with the same dimension as UGC, I would have gladly purchased them.
Update: Here's Wiggy's comparison.
