It would be interesting to see if the new dialog box is improving the number of users paying for the software, but I guess they are waiting for more data to see that. Appart for that, I have absolutely no problem paying for Elementary, in my opinion is the best Linux distribution and by far. Everything is really polished and well done.
I'm using Elementary OS right now. It's pretty, but it's really no more polished than Ubuntu. In fact, it just mostly uses the same Ubuntu repositories. That's not a bad thing, but it's worth keeping in mind that Elementary OS is as good as it is because it's building on Ubuntu.