You do realize void champs are on average better than regular champs?

You can only get void champs from void shards, so rare/leg chances have nothing to do with the value.

Nah mate, this ain't new and you're only partly right. Also, you are clearly too new or misinformed still.

Yes, they want you to spend money, like most companies.

No, the shards are not the same. They give the same chances regarding rarity, however, the affinity is quite different. You see, Void champions can only be obtained from Void Shards, irrelevant of Rarity, so if you want to have a chance at getting, say, Arbiter or Venus (even if it's a small chance) you gotta get dem Void Shards. That's what makes Void Shards more valuable. Some argue most Void champs arent that better, and I agree. But those that are better, are much much better.

Also, Void Shards do not drop from Dungeons, so there's limited ways to obtain them.