my opinion on these is, when you have old leather seats that are 10+yrs old, then this is an upgrade.
to go from this:

to clazzio is great. but to go from new fresh cloth seats (especially if you used to have nice leather seats in a previous car) you will automatically tell the difference and that it is after market. LET ALONE IN A YEAR OR TWO.

these are great $500 investments for people:
with a cheap/crappy little car that want a quick bank for their buck.
those that never had leather before in their life.
those looking to turn a pick-up truck seating surface into something more durable (since these are not really leather, they are plastic vinyl).
those who are in the business of re-selling cars- and need a easier way to sell the car.
those who are trying to sell a car, but have torn leather seats.