As you notice in the list above, vape pen prices can vary dramatically, and you wonder what the difference may be.
Typically, with higher-end vape pens, you'd get a more:
Inclusive kit with more coils & a carry case.
Better build quality, keeping the air-path pure from plastic or silicone.
Robust and long-lasting battery
Better availability of coils and replacement parts.
Cheap vape pens can be good for travel or as a backup, but if you're serious about dabbing, you should invest in a good pen.