GameSir T3 Pro Tri-mode RGB Wireless Game Controller with Hall Effect Trigger bluetooth Joystick Gamepad with Charger Dock Six-axis Gyro HD Rumble Motors Retractable Back Butoons Tactile Micro Switch D-pad for PC Switch IOS Android – Black.
Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
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Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. We have found one coupon for this product!
Link: Banggood product page
1. ($39.00): BG61c7e3
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGALL8, BGROTGT3P, BGVGC8
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for GameSir T3 Pro Tri-mode RGB Wireless Controller. The lowest price was: $39.
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)).