You should always make it a point to check on pricing with Mariner Sails before sending your dollars to out of town businesses.
They offer special pricing on AirPro Max seats if they sold you a 2102 or newer Ride. It is WAY better than your 15%.
x10 that is how I got mine
"Ipsa scientia potestas est"-Knowledge in itself is power - Sir Francis Bacon
"Beware the lolipop of mediocrity, one lick and you could suck forever" - unknown author