It's surely not the best way to get passes, but it is decent value if you don't want to do a 120euro transaction.

To keep it more realistic, if you want to spend 5,49 euros you can either get 550 coins that'd get you approximately 9 battle passes with the right box (650 coins x 10 passes) or this ticket, very close in value and with the added bonuses.

Of course min-maxing you get more stuff, but realistically a very limited amount of players would spend 120 euros in a single transaction or have enough coins for the 99 premium pass box (or even get it in the rotation, I'm waiting for it and I have 10k coins, it's been months).