well if the pills are straight monohydrate, just encapsulated, its the same as taking the powder form, just not as cheap.
the liquid is expensive, but the bigger issue is that creatine degrades to useless creatinine once its mixed into liquid. it takes some time, but if that bottle of liquid stuff sat in a warehouse 2 months in the heat, then sat on the store shelf 2 more months before you buy it, a lot of the creatine is gone, so it becomes a less effective product. its fancy 'ready to use' gimmick is why they still sell enough to make it profitable to keep making it.