I haven't tried the F2P model that Turbine developed for DDO (as I'm playing on the European servers and some difficulties or whatnot have prevented us from getting it), but to me it's an awesome game.
You won't have access to everything at first, but you'll get rewards for reaching some milestones and whatnot which you can then use to buy new stuff (as in another class, another race, another adventure pack), or you can just buy everything individually if you don't want to go through all the hassle of earning it (apparently very hard work).
I can't really tell you much more as I don't know anything about pricing or stuff like that (no Turbine Store in the DDO in Europe, so no experience with it), but you can most likely ask around on the forums, or find the info on the site.
You won't have access to everything at first, but you'll get rewards for reaching some milestones and whatnot which you can then use to buy new stuff (as in another class, another race, another adventure pack), or you can just buy everything individually if you don't want to go through all the hassle of earning it (apparently very hard work).
I can't really tell you much more as I don't know anything about pricing or stuff like that (no Turbine Store in the DDO in Europe, so no experience with it), but you can most likely ask around on the forums, or find the info on the site.