WO3 SE combined with DD2 is definitely the cheaper source (and far easier to find).
My combo cost me about $40 Cdn all told, and at the moment I am bidding on a WO3 SE all alone with its precious manual, and the scoundrel on ebay.ca known as Zytaca is out bidding me at about $75 Cdn.
OUCH!!
FOR ONE GAME!!!!!
(at least it's worth it.)