I too missed a missed a unit from dragonbox. I have been checking the website everyday ever since and no further units have been on sale Evildragon is a really good seller but I think he is busy with his upcoming Pyra and hasn't got much time to sell GCW Zeros, even though he does have stock.
The problem is not the TIME to SELL them but the time it takes to get these into a sellable state.
They had sticky, squeaky, sometimes not-properly reacting DPADS and buttons. The screens were horribly dusty, the boxes look used as well... and those were the brand new factory-sealed units.
It takes about 1 hour to properly fix it (as they take long to disassemble and reassemble), and THAT's what I don't have the time for.
Selling is easy, I often ship 60 - 80 orders per day while doing my other work as well, but the GCWs are an issue...
I'll have a helper end of next week for one month, hopefully he is able to reassemble the remaining units.
That said, AFAIR I should still get 20 or 30 from GCW, so if production has resumed (and without any more issues now), I should ask them to send these to me.