I saw this video and it gives you a good idea how the packs work if you didn't get to try the trial. youtu.be/DiNd0O87bZk
EA and their damn packs.
It's not that bad.
At least in MEA you have all packs on one screen without scrolling down like mad to access Jumbo/Arsenal/Reserve which were below line of sight. When purchasing en-masse that was so infuriating and took half the time of whole operation.
What do you think?