I got the collectors edition about a year after launch, got it on ebay for a few quid - the guy said he was given it "used" from a shop I knew didn't sell PC games - took a risk and it paid off, got the statue, books and the gamecode You get some cc coins free with adding a collectors edition now a days as well. I mainly got it for the nice Imperial amour it lets you buy.
The digital deluxe is not that useful to be honest, back in the day the mount was handy but they are very easy to come by now and the refer a friend speeder is much better (I referred myself lol). If you collect pets its possibly worth getting but the mouse droid is kinda crappy