Figure this is the best place to ask:
If I pre-order the game from Amazon/GMG do they send you a code for the early access?
I preordered from GMG with the deal in the OP earlier today and got the early access code straight away. They haven't opened up the page to register it yet though.
I'd say it's probably worth giving it a shot for the first month. The combat and questing feels very very been-there-done-that but the game's presentation is great. The choice to go pay-to-play especially after 1 failed launch seems like a terrible move to me, but I guess we'll see.