Questions

0Cell is not a product, it is a concept.
once you understand the concept you will appreciate its value.

otherwise,
you can only talk about price, yes, of course, the price is exceptionally good, but, that's not what it is about...

anyway,
it's ok to buy 0Cell because of the low cost.
hopefully, you will understand its value later.
if not, at least you would have saved money - and time, which is priceless !