I'm assuming that you're sort of doing the wordpress.org/.com model with paid hosted and free, open source self hosted options, right?

I did spend a few minutes on the site figuring this out.

imho the free trial is too close/similar looking to the download now and unless you know how wordpress plays, this can be confusing. Also, the fact that you can donate to the same site you have to pay for is a little weird.

Wordpress has a clear separation for a good reason.

I'm not saying what you're doing is wrong, I just think how it's presented can be improved upon.