When I was updating this page the price was $10.99 for ESP32 CAM Development Board with OV2640 (in Banggood). Basically copy coupon, view price history or create e-mail price alert. What is the best price?
Latest coupon code price check (UTC time):
RAM internal 520KB + external 8MB PSRAM, SPIFlash default 32Mbit, Working voltage 4.75-5.25V, Wi-Fi 802.11b/g/n/e/i
Banggood ($10.99)
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood. Is it good price? Hmmm, price is higher than average (which is $9.18 right now), so better set price alert down below…
Link: Banggood product page
Price: $10.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGJUNEGSG9, TTSUMMER8, Cuponation9, 9OFFSUMMER, BG00c906, BG589b2e
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for ESP32 CAM Development Board with OV2640 is here.
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)).