Steam – Purchasing UPlay game on Steam

You are indeed boned, good sir.

The UPlay system has been designed in part to discourage used game sales. In order to gain access to this game on UPlay would require you to also gain access to the account it has been registered on, and in the process gain hold of the email registered to that account, etc. This would of course require you to track down the person which traded in the used copy and convince him to part with his account in which he may have registered other games that he may wish to keep.

Contacting Ubisoft will probably not help much. Their representatives are not obliged to help you in this matter. If they choose to help you, you are in luck. I would not count on it however. I think the greatest chance for a refund is for you to take the used game back to the reseller and explain the situation and hopefully get some form of refund.

I just did this. I have Assassin's Creed 3 on Uplay from a free download code when I got a gfx card a few years ago. I just bought AC3 on steam during the winter sale and now my Uplay account shows two instances of AC3, one of them is the uplay version that tries to download it from the Uplay servers and the other one is a link that starts the steam version.