After all, the game will only provide two free boosters every two hours
The number you'll want for each card type really depends on the kind of deck you're building, but a nice starting point is a 15 Pokmon, 15 Energy, and 30 Trainer split , and then you can work your way out from that
You can actually make good money by selling them
Once per turn, during your next Standby Phase after this card was banished: You can Special Summon this banished card, then if "Numeron Network" is in your Field Zone, inflict damage to your opponent equal to the combined ATK of all banished Xyz Monsters
Most players at the table can deal with high-value cards like the ones mentioned above, but they quickly start to get overwhelmed once you get two triggers per spell
Trading or selling physical code cards for physical, real-world things is fine (as far as Im aware), but once youre in the digital world, you can only trade your cards or virtual items for other virtual things