This concept is definitely a ripoff of sports cards. Some brands have different color borders for certain cards, each border color is 1/1, 1/25, 1/100 etc so you can collect a rainbow of the same card with varying degrees of rarity.
I don't hate VaultBox, I even bought Series 1, but those look ridiculous IMHO. With that said if someone else likes them and wants to collect all the colors who am I to judge.