I have this offer too for Dec 29 on Oasis. I had to read it a couple times to be sure I understood -- it's less than purchasing internet access by itself! I originally booked this cruise via the RCCL website and then transferred it to a TA. I booked the package and can confirm it is $88.99 total not per day. I did NOT yet cancel the internet package I had previously purchased just in case this is some kind of mistake listing so I wouldn't lose the price I got for it (which is less than what it is listed for now).
Fine print says this "Offer applies to bookings made March 10, 2023 – March 15, 2023 and applies to select sailings departing March 14, 2023 – December 31, 2023." however I made this booking months ago so this is why I am thinking there is a non-zero chance this is a mistake listing that gets cancelled.
Editing this posting because after I posted this I re-read it again and it says "Introducing Premier Pass, our newest and most innovative vacation package for 2 guests.". I bought this for myself and my wife (so I was charged $177.98) but I wonder if I only needed to buy one of them? This seems to indicate ONE package is good for TWO guests. I might call RCCL during the week to figure this out.