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Order Summary
Item(s) Subtotal: $26.95
Shipping & Handling: $0.00
Promotion Applied: -$5.39
Your Coupon Savings: -$5.66
Total before tax: $15.90
Compared to the other battery tester recently on sale, ANCEL BA101, which is $18.35 ($35.99 - 32% clip coupon - 17% promo code JQ5K9S79) = 49% off.
The ANCEL has been around for longer (first available Sep 2016, vs. Sep 2021) and Amazon sold it from Jan to Mar this year for around $54. The KONNWEI has more reviews probably due to lower price and more frequent sale (it was $7.80 last month).