Aliexpress
Click here… to search for Bullcaptain Genuine Leather Business Messenger Bag on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (49.93 USD): BG8OFFCOUPON
Coupon (49.93 USD): TTBLACK5
Coupon (51.01 USD): BG00c906
(CouponsFromChina.com tip: you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
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): BG5a27a0, 00c906, ADMITAD2212, BGe49e19, 2022ACTIESNL, Terence, BG1efeb0, BG790363, BG6e8f86, BGb8a175, BGd3aab6, BG8a1e7c, hoNEYbGdeAlS, BGe7866d, BGcoupon8off, BGGutscheine
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for Bullcaptain Genuine Leather Business Messenger Bag.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).