I have my doubts about that since this one is stainless and copper compared to fasttech's stainless and aluminum. Copper is more expensive and would be far less likely used in a clone.Plus this is an express kit with 18500 battery tube as well as user manual explaining the lower sale price compared to the full kit seen at fasttech.. $71.82 ZNA 50 Style Variable Wattage APV Mod - 7W-50W / 1*18500 or 1*18650 / stainless steel + aluminum at FastTech - Worldwide Free Shipping
The clue is in the description ZNA 50 STYLE etc




I like single horizontal Kayfun-style builds--they are so easy to make and rewick.