Jan 15 10am - Jan 18 10am at BUF, rate code LAST

I wonder why the extra day is $4.80... seems rate code LAST screws up the weekday rate.

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Selected Vehicle: Compact-Car, Auto Trans-Air Con
Ford Focus or Similar
Details:
$23.99 USD Weekend day
Base Amount:
Weekend day: 2 at $23.99 USD
UNLIMITED FREE MI

Extra day: 1 at $4.80 USD
UNLIMITED FREE MI



(MI = Miles KM = Kilometers)
Total Approx. Charges: $32.60

The total rate for your SPECIFIC RATE was calculated based on the following:
Promotion Coupon Number: 00959976
PROMOTIONAL COUPON HAS BEEN DEDUCTED FROM TOTAL RENTAL CHARGES
CDP Discount Plan: 706900
THE RATE HAS BEEN DISCOUNTED BY 20 %
Plan Name: TRAVEL PARTNERS CLUB