Most people guess it's 0-2.
If you're looking for one card, just trade for it, or buy it individually.I wanna get an idea of what are my chances of getting the Lv. X that i need if I bought a box. or two
However, for me at least, opening boxes is one of the best parts of playing this game. Granted, more fun when you're seeing which 3 ex's out of like 10 is more fun then one of three, but definatly buy a box if you want one. You'll probobly get a Lv.X.