This is a custom item to be purchased when the tuner specifys to do so.
 
This could be adding on a custom feature to your tune.   It's in 25.00 intervals. So if the fee is 25, purchase one. If 50 purchase two and so forth.
 
Do not purchase unless told to.  If you purchase this due to not listening there will be a 10.00 fee for dealing with the return and emails.