You should skip the purchase if you see any of these red flags:

• The puff count is absurdly high for the liquid volume. If a device claims 25,000 puffs but only has 10 mL of e-liquid, that's roughly 2,500 puffs per mL. That's unrealistic—most devices top out around 200–300 puffs per mL.
• No e-liquid or battery specs on the label. If they're hiding the basics, they're probably hiding something else.
• No manufacturer contact info. How would you file a complaint if something goes wrong?
• The seller can't answer basic questions. They should know their products.
• The price is suspiciously low for the claimed puff count. If it sounds too good to be true, it is.

Remember, the goal isn't to find the absolute highest puff count—it's to find a device that actually delivers what you need for your commute and your pocketbook. A realistic estimate beats a fantasy number every time.