Image Sensor: 1/3″ SONY Super HAD II CCD, Horizontal Resolution: 600TVL, Lens: 2.1mm FOV165°/ 2.3mm FOV 150°, 2.1 mm, PAL.
Price history, coupons and price alert are available on this page. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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 available! Pretty cool, huh?
Link: Banggood product page
1. ($30.59): 502C6B
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 25a2a0, JC20
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Runcam Micro Swift 3 RC FPV Camera 2.3mm PAL ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for Runcam Micro Swift 3 RC FPV Camera 2.1mm PAL? There we go. The lowest price was: $22.99.
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)).