According to my DB the lowest price is 12.99 USD for AN100 11mm Camera (in Banggood). Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood (12.99 USD)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. Is it cheap? IMHO this is a good price, coz it’s lower than average (14.16 USD)
Link: Banggood product page
Price: 12.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGTOOS729
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
Click here… to search for AN100 11mm Camera Endoscope 1m on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for AN100 11mm Camera Endoscope 1m is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).