spark plug replacement cost
 

What is the average cost of spark plug replacement for a 2010 prius

Who is providing the labor ?
Call around for some quotes.
It will vary a LOT by area because of the different labor rates.

It is quite easy to do yourself.
 

It was embarrassing the first time I went to replace my spark plugs. There was no distributor and no spark plug wires. There is a wiring harness across the top of the engine. The spark plugs are at the bottom of a well that is topped by the coil for each cylinder. Once I figured that out, the procedure was easy. You can price the plugs at any auto parts store.

It's been a week and a half and "he" hasn't been back to look for replies.
I don't understand why people do this.
Just wastes everybody's time.