Legitimate question so please take it sincerely, I don't want the tone to come across the wrong way, I'm just curious...what benefit is there to buying one of these over say a Protank for 1/20 the price if one already builds their own coils?
Juice flow control. no flooding or gurgling.
Air flow control. Not dependent on the the PV 510 connector.
Coil customization. Single or dual coils. I guess you can do this in the Protank too but the range of coils you can build in the protank is limited.
Wicking material. same as above.
Auto juice feed which you can turn on or off.
Auto center pin adjustment.
Auto ceramic cup drain which you can turn on or off though not easily. Only accessible before building a coil.
Easier filling of the tank compared to Protank. Except maybe unitank might be close.
High quality material and construction. Similar argument used for ProVari vs other mods.
Upgradeable. Imeo is making an upgrade parts.
Ability to use as a hybrid(no 510 connector) on GG mechs.
Subjective but Flavor, Throat Hit and Vapor production is far superior.
That's what I come up with off the top of my head. Still probably not worth 10-15x as much for some people. For me just the first two and flavor difference was good enough.