Leasing uses a built in interest rate typically higher than on a loan. aka, if you could buy, you would, and since you can't, we're going to hit you harder....ask them what that rate is.
Ordered a cushion yesterday after trying one out from an office chair. Seemed to help....can't readily see how to install the jackers anyway. I have 30 days to return if it doesn't work....I just hate having to slide in over the thing....we shall see.
And the main thing to know is that those corner pieces are NOT to be separated from the rear window. Ever. There are vids on install/de-install.....why the dealers don't point this out is beyond me. Maybe they just don't know.