98% savings at Walgreens!

BOGO 50% SCHICK DSP RAZOR @ 8.49 sale price (got 2)
8.49 + 4.24 = 12.73
Scrubbing Bubbles Toilet Gel @ 3.50 sale price (got 1)
Scrubbing Bubbles Bathroom Cleaner @3.50 sale price (got 1)
***Note I found a 10% free size!*****
3.50 x 2 = 7.00
Total Before coupons = 19.73
Both from Coupons.com:
>Buy one SB Gel Toilet cleaner Get one SB Bathroom cleaner free (-3.50)
>7.00 off two Schick Dsp Razor (-7.00)
>Used my 5,000 points (-5.00)
Total OOP = 4.23$
Received an RR for 2.00 and peelie for 2.00
I.e. I got 19.73$ of product for 0.23 cents! A 98% savings!
(Most Walgreens has a 7.49 sale, mine was only 8.49)
I showed the manager and cashier the 7.49 price when I used the bar-code scanner and I was denied that price. Could I have done anything different? If I had the 7.49 price, this would have been a MM.