After owning a TH2Go, then trying SoftTH, I'd say that it isn't worth buying a TH2Go.
Why pay money when you can get the same solution for free?
Because its not the
same solution at all, its a different solution to the same problem (spanning monitors).
Compatibility (requires tailor made support per title, SLI/Crossfire), performance (saturates the PCIE bus) and image quality (16bit modes on Side Screens). I tried SoftTH for a week before deciding on TH2G. SoftTH is very clever (and impressive), but there are extreme limitations that software alone cannot completely overcome and the TH2G fills this void rather well.
I do however think TH2G
is too expensive. I dont have their BOM cost so I cannot say they are "ripping us off", but I think its too expensive to gain any market traction, as per the original post the cost of extremely complex CPUs and even more complex GPUs has come down significantly. The TH2G is a collection of Image Processing DSPs, presumably running Matrox code. At the very least the hardware side should have come down in cost since the introduction and the coding cost is the salary of Matrox's employees (ie already paid).
A more consumer friendly price would be $149.99 and Im being generous to Matrox here. $199.99 puts it at upper enthusiast bracket while the $249+ pricing is pure niche and nothing more (think Ageia Physx PCI cards). IMO, its a gaming device, I seriously doubt its being used en masse for anything else and should be priced in line with other gaming peripherals, which arent exactly cheap, but cheaper.