If you check out Zip Line Stop they are currently offering a back to school sale on all zip line kits. There are cable free zip line trolley kits, 75 foot zip line kits, 100 foot zip line kits, 150 foot zip line kits, and 200 foot zip lines. You can use coupon code "Back2School" to take $10.00 off of your entire order. I am unaware of any upcoming sales. If you are unsure of what zip line to buy you can check out some of these Zip Line Information Blogs: Zip Line Sales Info, Zip Line Blog, and Backyard Zip Line Info. Good luck in your quest to find the perfect zip line.