The Ridgid brand of professional plumbing equipment is the clear industry leader with some of the most well built and innovative products available. Unfortunately this also means they do not run many promotions for their products with the exception of the once per year Spring Fling promotion where you can pick up a few extras with your purchase. The promo is a mail-in rebate and can include additional cables with Drain Cleaners, a free year to RidgidConnect or a NaviTrack Transmitter (valued at $915) with full SeeSnake Camera System.
For more details here is the Mail-in Rebate form you will need to fill out to claim your Freebies. Promotion ends in April and is good for all orders from Jan 1 so if you already made a purchase of one of these items you can still claim your Freebies. Here is a short Youtube on drinking the Ridgid Kool-aide.