If there is such a huge call for what you make then perhaps its time to consider raising the price to make them a premium. As it is your products are being sold after the fact on e-Bay for four times what they originally sold for. Doesn't that tell you something? Stop thinking small time and get going on what you are good at.
Just my 2 sats: I wouldn't buy this device for 3600€. Never. I love the project and the product and the whole idea of decentralizing mining and bringing it into the homes, and that's why I think he wants as many households to have one Apollo instead of having a few people hoarding them. That's why it seems he puts those restrictions in place, and I think it would be counterproductive to the maxime of decentralizing mining again if the price was 4x what it is now.
It's already unreasonable to amortize the cost at 900 bucks per machine, so a higher price and removal of purchasing limits would not help in the decentralization.