Great, go ahead and build your own and put this guy out of business! I mean you'll have to design the board, or pay licensing fees. Then buy PCB. And components. And heatsinks. And a pick and place machine. And a reflow oven. And write the firmware. And get support into bfgminer and cgminer. Don't forget to test! And of course if you want to sell them you'll have to set up a company, build a website, and pay all relevant taxes, not to mention getting the requisite certifications (we won't mention shipping and warehousing either). I imagine you'll also have to pay rent and eat and stuff while all this is going on, so I suppose you'll need a full time job until you can bring the units to market, which is going to necessitate 90+ hour weeks for 3-4 months at least, and of course there's always the risk that your miners just won't sell for whatever reason. But as you've already implied, that kind of risk and effort don't need to be compensated - the satisfaction of bringing mining equipment to the masses is reward enough, right?