In my opinion
It seems to me that the dev is making a mistake regarding the versions.
I mean, the game caught my attention. I was going to give it a try to see if I liked it, but the version here is the one that doesn't have the content, which I don't like since you can't judge a work well since it lacks content.
So I thought well I still pay €3 to try a previous version and if I like it then I'll follow it but to my surprise the minimum is €5 and it's not the exclusive version.
€5 gives you the normal version as early access, if you want the exclusive version you always have to pay €10 since they don't release it later for the €5 ones
That's why I say that I think it's a bad idea, I understand that you want to give a benefit as a benefit, logically since they pay, but I don't know how logical it would be if here it were 1 or 2 versions later than the exclusive version or a couple of weeks later or 1 month they also put it for the €5 ones
I say this because in my example I could spend €5 to try it to see if I like it, but I am not going to pay €10 for something that I don't know if I will like.
Emphasize that this is my OPINION and nothing more.
I used Google translate because I was too lazy to think about how to translate it.