Just check coupons out (with price alert and history). What is the best price?
Style As shown, Capacity 80L, Fabric Durable Oxford fabric, Ingredients Polyester
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 Europe 
. I don’t want to misguide you about the price. I don’t know if it’s good, because I don’t have enough records in my database…
Link: Banggood product page
1. ($40.47): 8BGwbg2204
2. ($41.35): BG00c906
paste coupon code in your cart and click Apply 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
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BGbf0194, 13f142, BG10OFFAFF1, BG4d9120, BGAlerabatod, 00c906, BGe46870, BG7280ff
(these coupons are old, so probably won’t work)
Price history and price alert
There is only one database record (it was for $24.99), so you can’t see price history chart.
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)).