The “Free plans” tags in the Hosting partners page on the owncloud website seems to be mistaken: I couldn’t find any free plans on openitstore, hostiso, blaucloud, EDV Lühr. Only oCloud does indeed offer a free plan.
I suggest removing the Free plan tag on those four hosting partners out of five, to let users save time.
(I tried to send this information by e-mail to webmaster at owncloud, but this address does not exist. I ignore how to contact anybody responsible for the web site so I post it here, hoping that it will have some effect.)
(Sorry for the links, as a new user I can post only two links.)