I think the answer is yes, I meant digital deluxe upgrade. Unfortunately, I have a headcold and I'm not sure if that's still confusing, so let me try to clarify.
The trial is for The Sims 4 (base game) that sell for $59.99. After the trial, I was able to purchase that version for 33% off ($40.19). I was unable to purchase any other version of the game with the discount (I tried). However, The Sims 4 Digital Deluxe Upgrade sells for $14.99, so it can be tacked on after using the discount and still get the pair for less ($55.18) than if you bought the $69.99 Digital Deluxe version outright.
Gosh, I hope that's clearer ... headcolds make thinking difficult :-). You got 4 days, wow! (My Origin still says 48 hours.) Origin will start popping up and to remind you that your time is running out shortly before it's over so you have time to save your game. Have fun!