Sixt - Sixt car rental - Florida Car Rental 25% Discounts - YMMV

been watching last minute deals for my upcoming trip in may just to see what the trends are. found this at sixt for my example at MIA for 2/21 - 2/28. i put YMMV because sixt seems to change their website up a bit and i couldn't find any info on the coupon details. when i put my may dates in prices were way out of line.
go to sixt.com and click on the 25% coupon.
these prices seem pretty reasonable. going above the mb c class everything got too high...

Your rental details (Rental period: 7 days)
Pickup - Dropoff
Sixt airport stations Miami International Airport

Hyundai Accent
Limousine (ECAR)
US97XFL1=S/ECAR/2 Price per day: US$ 18.93
Total: US$ 132.53

Nissan Versa
Limousine (CCAR)
US97XFL1=S/CCAR/2 Price per day: US$ 19.40
Total: US$ 135.77

Chevrolet Cruze
Limousine (ICAR)
US97XFL1=S/ICAR/2 Price per day: US$ 19.86
Total: US$ 139.01

Toyota Corolla
Limousine (SCAR)
US97XFL1=S/SCAR/2 Price per day: US$ 20.32
Total: US$ 142.26

Toyota Camry
Limousine (FCAR)
US97XFL1=S/FCAR/2 Price per day: US$ 20.32
Total: US$ 142.26

Ford Mustang
Convertibles (STAR)
US95XFL1=S/STAR/2 Price per day: US$ 30.88
Total: US$ 216.14

Mercedes-Benz C-Class
Limousine (PCAR)
US91XFL1=S/PCAR/2 Price per day: US$ 45.63
Total: US$ 319.43