Please read http://forums.cnet.com/5208-10157_102-0.html?threadID=385246 and the links in that discussion. Too often it's a scam or worse.
My comment is why would we hand our credit card numbers over to thieves?
Bob
I am looking at purchasing Adobe CS4 Design Standard and noticed several online companies are selling it at a much lower price ($580). Does anyone know how they can do this?

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