75g of dextrose is a bit much for most people. You need PWO carbs, but not always that much. If you're going to continue to shop at GNC, one option is the Creadrive. It's essentially the same thing as Cell Tech. For $14.99, it's 4lbs, 40 servings, 34g of dextrose, 5g creatine, 1g taurine, & electrolytes...and if you have a gold card, which I assume you do, then it would be $11.99.
I'm actually considering buying some...
I agree with everyone else though. It's better to buy your stuff in bulk. You will save in the long run. I work at GNC and even I don't shop there.