Use coupon and get 100C 3S for 42.99 USD (from Banggood). Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood (42.99 USD)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. But wait a sec… Is it a good price? This price is higher than average price (37.54 USD) for this item.
Link: Banggood product page
Price: 42.99 USD
Old coupons (from the oldest to the newest): BGMatt2022, BGToys8, BGGutscheine, BG8OFFCOUPON, TTBLACK5, BG589b2e, BG8FORMULAMX, BG9efff9
(there’s a little possibility that old coupon will work)
Aliexpress
Click here… to search for ZOP Power 11.4V 9000mAh 100C 3S RC Battery T-Deans on Aliexpress
Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for ZOP Power 11.4V 9000mAh 100C 3S RC Battery T-Deans? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).