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Heck, it's an oxymoron...
deal, and photoshop! 
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I got quite a deal last summer. Got ver5.5 legit for $100. Found a place in Belgium who was advertising download only versions on Ebay. I must admit that my belief was that I was going to find out I'd been screwed when I tried to register it. I gritted my teeth and punched in my credit card # (after ensuring with the bank that I could contest the transaction). Low and behold, it registered just fine.
I've just spent the last 15 minutes trying to find these folks again on the web, and (surprise) they are nowhere to be found. It was from Visual Design Studio at
www.add-soft.com
If anyone knows the low-down on how they were doing it, plese tell. I don't have anymore details to share. Like I said, I can't find them anymore.