Basically copy coupon, view price history or create e-mail price alert. Best price?
Power Consumption 75mA/12V, Storage Temperature -20℃ ~ 60℃, Working Temperature -20℃ ~ 50℃, WDR Support, Resolution 600TVL(color), TV System PAL/NTSC (based on country), Camera Title Support, Synchronization internal, DNR 2D DNR, Power, White Dot Repair Support, 650TVL(B&W), Flying Time, Solution 1/3” Sony SUPER HAD II CCD+Nextchip 2040 DSP, Min. Illumination 0.01Lux, Pixel PAL: 976(H)x494(V); NTSC: 768(H)x494(V), OSD Programming Board Support, Image Adjustment Support, OSD Edit Name, 166mA/5V, Input Power 5 – 40V
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($19.04): C5B07F
2. ($20.28): Parts8
this code has to be applied in your 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): BGss10%fox, BGBCFPV, bgbcfpv, BGfox15, 502C6B, BGOTC21, BGBFCR13, 0e7f33, FBCOUPON1
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Foxeer Arrow Mini/Standard Pro 1.8mm FPV Camera With Bracket.
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)).