I am monitoring price for SWR Meter with and it is for 119.59 USD now (in Banggood). Price history, coupons and price alert are available on this page. You probably want to know what is the best price?
Latest price update (UTC time):
Banggood (119.59 USD)
Banggood warehouse is located in China. Is it a low price? Hmmm, price is higher than average (which is 117.24 USD right now), so better set price alert down below… There is one great coupon!
Link: Banggood product page
Price without coupon: 119.99 USD
Coupon (119.59 USD): BGHONEYSP
(CouponsFromChina.com tip: apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGNEWYEAR8, BG95a071, BGSPRING8OFF
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
Click here… to search for High Power 200W Digital SWR Meter with 1.8-54Mhz Frequency on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for High Power 200W Digital SWR Meter with 1.8-54Mhz Frequency.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).