Hi there, which special offer are you referring to? There's a wave bundle which might be what itch is displaying, which allows you to purchase all of the templates together.
Itch displays the wave bundle, yes, and it also states that if one already has one of the other purchases the bundle is 100% off. But when I click on it, it says that I have to buy a bundle first.
It's fine, really, I just wanted to let you know^^