Used PSO?

[Frost]

Ok, since we can't find any new copies of PSO in ANY EB there (they said ST discontinued them new) my friend is left with the alternative of buying one new off like amazon.com for $100 or buying a used one. Now, the only thing about this is that when I bought a used copy of pso for the DC once (v2) and I tried to use the key but it was already used! So, if my friend buys a used one for the GC are we going to encounter the same problem? I kinda think we will but we are being left with little to no other choices.
I heard that you can contact ST somehow and they will give you a new Serial Number and CD Key, but does any one here know how to contact them?

Thanks in advance