Litter Genie? Does it work with diaper genie? expensive refills!

why would anyone buy this? its a pricy way of throwing away cat poop. If you got the right cat litter in the beginning there would be no scent.  Its like buying another trash can.  The refills are pricey too : 

litter genie, cat litter odor control, cat litter trash can, smelly cat litter, waste of money, rich cat,  lazy cat owners, plastic bags,  ultimate odor control cat litter system, pet stuff, pet poop, sanitation