It is underpriced in that it generally costs more to make QRK than it sells for, but I think it's a PnD that's already on it's death throes due to lack of support from merchants or any use.
How much does it cost a botnet to produce 1 QRK? Remember stolen computing power and stolen electricity = 0.0000. CPU coin = botnet coin. Whatever you can produce with a single CPU the average botnet can produce 10,000x as much at near 0 cost. It never had a future.
You do realize it's possible to do the same with GPU's?
Utilize the GPU of every PC that is part of the botnet?
I mean a company already did it with bitcoin within their software (too lazy to google now)..
Agreed GPU raises the barrier slightly and botnet herders tend to go for the low hanging fruit. The issue of GPU botnets will only get worse in the future. Most low end systems now come with relatively (at least compared to prior northbridge based integrated video) powerful "on die" GPUs (GPU is part of CPU). Both Intel and AMD latests on die GPU are OpenCL capable. The threat isn't so much a botnet acquiring hundreds of high end systems as zombies but a botnet acquiring tens of thousands of openCL capable "on die" GPU based systems.
While relatively low powered (50 KH/s compared to a high end GPU being 400 KH/s or more) a botnet will make up for it with thousands or tens of thousands of units. It will take some time but it is inevitable.