According to my DB the lowest price is 22.99 USD for SD/TF USB3.0 (in Banggood). Price history, coupons and price alert are available on this page. You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood (22.99 USD)
Banggood warehouse is located in China. I have no active coupons for you right now. Price? Hmmm, price is higher than average (which is 21.66 USD right now), so better set price alert down below…
Link: Banggood product page
Price: 22.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Aliexpress
Click here… to search for External CD/DVD Drive USB 3.0 Type-C With SD/TF USB3.0 Slots on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for External CD/DVD Drive USB 3.0 Type-C With SD/TF USB3.0 Slots is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).