Anyway to buy Evo2K6 and previous ones?

Just purchased Evo 2K7. Wondering if there’s anyway to buy the previous stuff. Or it’s not possible?

Go Premium

What does “go premium” mean?

buy a premium account. its in your user cp.

Then what do I do? Does having Premium account lets me buy the older DVD? or let me download them?

I have premium account. Now what?