$45.99 – Pack weight: 150g, USB: 2.1A @5.0V or Upgrade, Balance current: 400mA @2-6S, Input voltage: 7.0-28.0V @MAX 12A, LCD: IPS 2.0inch LCD 320*240 Pixel, NiMh @1-16S Pb @1-10S, Charger power: 200W @MAX 10A, Type of battery: Lipo LiHV LiFe Lion@1-6, Discharge power: 200W @MAX 10A Recycle mode, Pack size: 84*79*39 mm, Product size: 73*51*27 mm, 10W@3A Normal mode, Product weight: 90g.
I have checked all old coupons and price is $45.99 for ToolkitRC M7 200W 10A DC Balance Charger (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood ($45.99)
Banggood warehouse is located in China. I have no active coupons for you right now. Price? This price is higher than average price ($35.70) for this item.
Link: Banggood product page
Price: $45.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGTRM71, BGBCSpring1, BGDAVIS, BGHONEY2110, BGM704, xollodrnes57, BGTRM77, BGJulyM2, BGa5f3c2, Parts8, BGTRM7111, BGGAL8, BGRCParts8, BGSFBC1, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, hoNEYbGdeAlS, BGRCT10, BG1c1055, BG8ReviTrage, Cuponation9, BGMatt2022, BGToys8, BGGutscheine, BG8OFFCOUPON, TTBLACK5, BG589b2e, BG798ee4, BGISSAM0133
(probably won’t work, but you can try them out)
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
Here is price history (for all/most countries) for ToolkitRC M7 200W 10A DC Balance Charger. The lowest price was: $31.99.
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)).