$149.99 – Type: Practical, Resistance resolution: 0.001Ω, Model: FR2000A+, Current resolution: none, Current range: none, Resistance range: 0.01Ω-200Ω.
I have checked all old coupons and price is $149.99 for FR2000A+ Clamp Ground Resistance Tester (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood ($149.99)
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood. The question is – is it a good price? This price is higher than average price ($146.85) for this item.
Link: Banggood product page
Price: $149.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BG485f6d, BG20236Tool, BGMAI666
(there’s a little possibility that old coupon will work)
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.
Price history and price alert
Check out price history chart (for all/most countries) for FR2000A+ Clamp Ground Resistance Tester. The lowest price was: $139.99.
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)).