Buying a preloaded computer from ebay, which comes with Adobe software.

I know this question was touched on briefly in other discussions, but I would like a clearer answer. Is it legal to purchase a computer on eBay which is preloaded with Adobe programs? I'm aware of piracy laws and licenses. I was looking at macs on ebay lately and saw a few sellers selling CS6 suites preoloaded on used computers. I know there have been a lot of fakes and copies on eBay, and I realize the "to good to be true" rule still stands. But does Adobe track it's products when they are on computers? Some of these sellers have sold quite a few of these computers to buyers with preloaded Adobe products and I don't think the buyers nor sellers are aware of these things.

I am already a happy adobe customer with my own CS4 programs, which I paid for through adobe, so I have no intension of buying one like this, especially if it's illegal. I'm just curious about these things, especially if one day I wanted to sell my Mac with adobe products. I have heard about the license transfer forms, but not sure if that just applies to the actual program discs or not.