Induction ranges change how you move in the kitchen. Water boils in half the time and the cooktop stays cool to the touch, which makes cleanup easier and the room safer. It is a major upgrade that makes your daily cooking feel less like a chore and more like a precise system.
Black Friday is the best season to buy because retailers need to move inventory before the year ends. You can usually find the steepest discounts on stainless steel models then. Get at least three quotes from different shops and ask if they can bundle in free delivery or haul-away for your old unit.
The intro window is a firm deadline. If you still have a balance when the 15 months are up, the standard interest rate will be applied to the remaining amount, so make sure the stove is fully paid off before then.