Price history, coupons and price alert are available on this page. You probably want to know what is the best price?
Scene Selection, Integrated OSD, Low Voltage Alarm
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($26.67): Parts8
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): fb1b14, 502C6B, f62884, d8f2bb, BG15OFFCD1, BGss10%ru, bgssaff9, BGRET, BGBCFPV, bgbcfpv
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – RunCam Micro Swift 2 2.3mm Lens FPV Camera NTSC ($-3)
2. China – RunCam Micro Swift 2 2.3mm Lens Camera PAL ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for RunCam Micro Swift 2 2.1mm Lens FPV Camera.
Price records source(s): Gearbest, 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)).