ThundeRobot 15L Backpack 15.6 inch (Banggood, Aliexpress: Applicable: 15.6 inches and below laptop, Capacity: 15L, Color: black, Model: Black Warrior, Brand: ThundeRobot, Number of shoulder belts: double, Lifting parts: soft handle, Size: 44x 30x 11CM, Material: 900D film glue + 210D lining + PE cotton, Weight: 0.67KG (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. What is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. Too bad there’s no coupon right now in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGTHBL1, BANGGOODSD, 6GSGIT, 00c906, BGef96eb, BGcc63df, Kortings10, 2022ACTIESNL, BG216b8e, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, hoNEYbGdeAlS, BG8ReviTrage, Cuponation9, COUPONSDE1wk, BGcoupon8off, BGGutscheine, BG00c906, BG8OFFCOUPON, TTBLACK5, BG589b2e, BG8FORMULAMX
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for ThundeRobot 15L Backpack 15.6 inch. The lowest price was: $36.79.
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)).