AC current, AC voltage, Resistance, Capacitance, Temperature, Other functions, Analog bandwidth, DC voltage, Frequency, On-off test, Diode.
Basically copy coupon, view price history or create e-mail price alert. 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 China. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGherra, 7d18f7, BG00225CZ, BG23dd2f
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for MUSTOOL MT336 600V True RMS Digital Clamp Meter is here. The lowest price was: $45.89.
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)).