May I lend a hand?
I was just checking it out the other day...it's the "option 1" price:
"[G] GTB DIFFERENT MODEL EXCHANGE PROGRAM: Customers returning a GTB ESC (#1710, #1710-L, #1711, #1714, & 1715) for non-warranty service can request to replace their unit with a different Factory-Remanufactured GTB model for a $69 exchange price. Indicate model and Service Code (G) on Non-Warranty Service Form."