Wire Diameter: 3.50mm(For 14 AWG)/3.00mm(For 16 AWG), Conductor Material: Tinned Copper, Wire Length: 1M, Temperature Range: -60oC to +200oC, Insulator Material: Silicone, Conductor Size: 14 AWG/16 AWG.
You can create price alert here, copy coupons and view price history. 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.
Link: Banggood product page
1. ($5.45): BG25d4e7
2. ($5.93): BGMatt2022
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): Parts8, BGRCParts8, BG8RCToy, BGToys1, BGRCT10, BGJUNEGSG9, Cuponation9, BGToys8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. Europe – 1m Silicone Wire 24AWG [EU] ($-3)
2. China – 1m Silicone Wire 22AWG ($-3)
Price history and price alert
Price history (for all/most countries) for 1m 8-26 AWG Silicone Wire 20AWG is here. The lowest price was: $4.77.
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)).