According to my DB the lowest price is 65.99 USD for VHF UHF UV (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Latest coupon and price update (UTC):
Banggood (65.99 USD)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). Is it a reasonable price for this item? Hmmm, price is higher than average (which is 62.92 USD right now), so better set price alert down below…
Link: Banggood product page
Price: 65.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG477aef, BG49d4dc, BGTOOS729, BG7a2f34, BGSPRING8OFF
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – NanoVNA-H4 50KHz 1.5GHz VNA HF VHF UHF UV Vector Network Analyzer [EU] (65.59 USD)
Aliexpress
Click here… to search for NanoVNA-H4 50KHz 1.5GHz VNA HF VHF UHF UV Vector Network Analyzer on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for NanoVNA-H4 50KHz 1.5GHz VNA HF VHF UHF UV Vector Network Analyzer is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).