Some things are on sale, some aren’t. Some are 50% off, some less.
The “Cyber Monday Sale” is just part of the Black Friday Sale that began on November 9th.
You happened to point out 2 items not on sale. Many lunches are 40% off, water packages are 50% off, the refreshment package is lower than it has been for most cruises, the 4-device internet package is highly discounted, etc.