Colleges Other Than Big Three

[Merlin]

where are people seeing half off for Walden ?

I see
Total With Maximum Transfer Credits $15,590
Current Savings - Receive up to a $4,500 grant if you reside in the U.S. and start this program on February 24, 2020.

https://www.waldenu.edu/online-bachelors...ition-fees

You're looking at their normal online bachelor's program, for which there is no discount. You need to be looking at their Tempo competency-based programs. For the Tempo BS in Criminal Justice, the proper link is:

https://www.waldenu.edu/online-bachelors...ency-based

At the top of that page it lists the 50% discount:

Receive a 50% tuition reduction for the life of the program if you reside in the U.S. and start this program on March 2, 2020. Contact one of our enrollment specialists to learn more.