When I was updating this page the price was $32.99 for Track Saw Guide Rail for Woodworking 800mm (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Best price?
Track Saw Guide Rail Circular Guide Rail for Woodworking Longer Cuts for Makita Festool Track Saws Compatible with Makita Festool Guide Rail System – 800mm
Latest coupon and price update (UTC):
Banggood ($32.99)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. The question is – is it a good price? Hmmm, price is higher than average (which is $32.32 right now), so better set price alert down below…
Link: Banggood product page
Price: $32.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Track Saw Guide Rail for Woodworking 800mm.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).