Amazon has Automotive Diagnostic Scan Tool Fault Code Reader on sale for $28.57 when you clip the 25% off coupon on the product page and also apply 10% off promo code 10MMMM10 at checkout. Shipping is free.
Note, must be logged in to clip coupons, coupons are typically limited to one per account.
https://www.amazon.com/dp/B01N6RKE29