You can get 8BitDo Ultimate C Bluetooth Wireless Gamepad for $21.69 using coupon code (in Banggood). Price history, coupons and price alert are available on this page. What is the best price?
8BitDo Ultimate C bluetooth Gamepad Wireless Gaming Controller Built-in Six Axis Sensor ALPS Joysticks for PC Windows Steam Deck Android – Blue
Latest coupon and price update (UTC):
Banggood ($21.69)
Banggood warehouse is located in China. Price? Current price is the lowest in history (according to CouponsFromChina database)! I am tired of searching coupons, but I found one for you…
Link: Banggood product page
Price without coupon: $28.99
1. ($21.69): BG7fff08
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGREUP8BTDC
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
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
Check out price history chart (for all/most countries) for 8BitDo Ultimate C Bluetooth Wireless Gamepad.
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)).