I have checked all old coupons and price is 12.99 USD for 2Pcs Yellow Hand Crank Flashlight (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood (12.99 USD)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. You probably want to know if this is a good price. Well, this price is higher than average price (11.80 USD)
Link: Banggood product page
Price: 12.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGOutlight10, BG589b2e, BGd57765
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for 2Pcs Yellow Hand Crank Flashlight.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).