You mean the pro-authentic. I buy clones because I can't justify spending $200 (average for a mod) on just a tube that is supposed to save me money and keep me off smoking. And that's just a mod. Another $100 for a topper is outrageous. Yes there are cheaper authentic mods but my purpose was to save money instead of smoking. So really it's just whatever keeps you off smoking.
You just said it, there are cheaper authentic mods.