I actually really like the idea, a decent game on WOZ can take a pretty good chunk of time, I would enjoy a 5 minute game trying to get as many points as possible. I see it as comparable to the Assault on the Vault mode you can get on Safecracker, we've run sub-tournaments using it and it was fun.
The price is a little higher than I expected but not really out of line, I will consider buying it once I've had a chance to try it out.