$15.59 – Donut Loop Broadband Antenna 10kHz-180MHz (Banggood, Aliexpress: Donut Loop Broadband Antenna Frequency Range 10kHz-180MHz with Low Impedance Converter (the best price with coupon)).
You can get Donut Loop Broadband Antenna 10kHz-180MHz for $15.59 using coupon code (in Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood ($15.59)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. I think you want to know if the price is good. From what I can see this price is higher than average price ($15.29).
Link: Banggood product page
Price: $15.59
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for Donut Loop Broadband Antenna 10kHz-180MHz. The lowest price was: $14.99.
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)).