When you receive it, could you please check how the GB/GBC system works? I would like to know how the cart handles the differences between GB and GBC (like if it detects which one it is when it boots). Thanks!
Ofcourse there will be more. This is the usual pattern when a new ED comes out. The first bunch of stock gets bought up very quickly. Awhile later more will appear. Just be patient and check his store daily.
I just picked one up from StoneAgeGamer, fantastic piece of kit, the only downside from what I understand is no RTC so Pokemon Gold/Silver/Crystal are out, while I'm a huge Pokemon fan those are games I don't mind buying stand alone. Plus I've got Red/Blue/Yellow which are the ones I played as a child anyway. I was a little disappointed at the build quality, the case doesn't clip well together and frankly its a little flimsy, however its one of those things that will most likely never leave the Gameboy Color again.