Just check coupons out (with price alert and history). What is the best price?
Max load capacity: 10kg Folding size: 22x 8x 20cm Expanding size: 40x 22cm 2L YKK zipper
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($10.07): bGhOnEy10
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 502C6B, e2bcea, 35cf68, BGNaturehike, AFfbG10
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for NatureHike Travel Storage Bag Claret.
Price records source(s): Gearbest, 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)).