That's exactly why $5 doesn't seem like a transparent deal right now. It is also not clear who is the target audience here. The average person who would sign-up for a blog, wouldn't shell out $5 so easily, and a professional blogger would look at it suspiciously to begin with (given the extremely early stage). It would be better if that reference to $5 is clarified in-depth, or taken out altogether with a different kind of explanation.