Flight sim gear isn't something you want to upgrade twice. Metal construction and magnetic sensors mean a good pedal and throttle setup lasts years, so paying around $650 up front for a dedicated rig makes sense if you plan to fly regularly in VR.
Niche manufacturers drop new gear on slow schedules, but holiday bundles are where you actually save money. If you time the purchase right, you can snag last year's flagship gear bundled with mounts at a heavy discount instead of chasing whatever brand-new model just launched.
Keep in mind that the 18-month window is a strict deadline, not free money. If you still carry a balance when the promo period ends, the standard variable rate kicks in on whatever is left, so stick to paying at least $36.11 every month.