And blizzard attacks my wallet yet again
I've bought it with gold, three times, including two accounts who I didn't touch until after naxx had fully opened so I had no time to presave.
Honestly, you just need the first two wings. Sludge and Loat are the MUST HAVES. Chow and Shade are useful in some decks but can wait depending on the decks you want (priest and druid mostly).
Casually you can get about 350 gold a week. Thus 4 weeks to get everything you really need from Naxx. You can get the rest later after you have stable decks.
Basically the typical lwork that comes from any CCG.
5
I CAME IN LIKE A WREEEEEEECKING BALL