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 (9.99 USD): BG31JAN2023A
Coupon (12.21 USD): BG589b2e
(CouponsFromChina.com tip: just apply this code 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): BG67035b, BG06710c, BG7c8c97
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for Silicone Full Face Gas Mask Goggles is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).