433, monochrome User Input: joystick Interfaces: USB, 72, 5600-6000MHz in 50MHz steps Accuracy: +/- 0.5dB Attenuator: 30dB (internal) Battery: 3.7V li-ion cell, 1200, 128x 64 pixels, 2400, 320mAh Current Consumption: 35mA Battery Life: about 8 hours Auto Shutdown: 5 minutes timeout Charging: Micro USB cable Display: OLED, power control via CDC Antenna: 5.8GHz “Sniffer Antenna” (linearly polarized 2dBi dipole) Adapter: Male to Male SMA adapter, Power Level: -20dBm up to +30dBm Calibrated Frequencies: 35, 10440 size.
Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
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 Hong Kong.
Link: Banggood product page
1. ($92.00): Email5
2. ($92.07): aff7off
apply code in your basket (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): e2bcea, 67356a, 65d613, 502C6B, BGBCFPV, BGBCBG10, bgchinafest, BGBFAFF2019, BGCITYADS2019
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for V2 ImmersionRC RF RC Power Meter. The lowest price was: $67.14.
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)).