Till now Blizzard allways delivered something that was pretty much worth what they charged you to pay and if they continue with that it you won't be ripped of your money but pay for something that is worth its money.
I will wait with my decision if its moneymaking or good till the release/reviews.
Something I fear much more is that Blizzard might jump on the DRM bandwagon. I just read about Fallout3 and Red Alert3 using Securom and that means I won't buy these or buy it but play a pirated version without securom in it but thats pretty unlikely.
I don't get why a company invests into a "protection" that has been cracked in the past and will most likely be cracked the day after the release.
As for WoW. Blizzard charges pretty much the standart prize for it. A prize that is basicly the same for every MMORPG out there. So I don't see why that is money sucking when Blizzard is doing it while its ok for every one else to have the same prize.