They are cheap because Fischer brought in too many skis last year. Watea 84's from last year were equally cheap toward the end of the season, and the 94's could be had for a song as well. The Cold Heat was/is a great ski, I had a pair last year and liked it very much (better than the Watea 84). They are strong skis, though, and tend to be best for the aggressive skier, especially with that alloy plate.
The Big Heat is basically a ski close to that of the Hellcat from Nordica. A strong, yet wide ski. Not the best choice for uncut snow, but a terrific crudbuster and much better than average carver for the 90mm width. Most people were probably looking for something softer at 90mm underfoot, so it probably didn't have much of a target audience. But, a great ski still; it compares well to the stronger 88mm skis out there, like the iM88.
Regarding weight: they are heavy, but I haven't ever noticed weight of a ski except when I am walking to the lift in the morning and walking to the car in the afternoon. I can't buy into the theory that heavier skis are somehow worse: they stay grounded better than light skis, and I have never noticed sluggishness in getting a "heavy" ski onto edge. In fact, most of my favorite skis could be considered "heavy" as they have a dense wood core and quite a bit of metal. Lighter, cap/foam core skis nearly never agree with me. We weighed a Cold Heat in 176 and a Watea 94 w/Mojo 15 in a 178, and the weight difference was 300g (around 10 ounces) per ski. For someone who weighs 175lbs, that is an increase in around .6% of overall body weight.