Hi :) .
IMHO if your goal is to reach level 75 faster, you shouldn't buy either a pack or this XP boost 10 card.

Let me explain: you currently have only 1 pizza and only one box, which already allows you to carry out some missions serenely. With another pizza, you ensure the possibility of doing at least two lessons or 2 x 120 xp. It's still much more advantageous than a Xp 10 boost, isn't it?

These Xp boost cards are, I think, mainly for players who need to get 6 or 7000 xp to pass a level. These same players also have enough pizzas and boxes to carry out 30 to 40 missions per day: at this moment, it is interesting.

There it is, hopping I helped you .

Mmmmmm , edit : Are you really sure you've seen a Xp boost 10 at 9999 starbits . If yes, buy it quicly ...