I'm always a little wary of new Ebayers, simply because they have no history. However, I have rarely had problems with them, and don't cancel their bids (even the Ebayer with 10000 positives started off with 0 feedback after all!) I do check their feedback though, just in case the 0 is because they've had as many negatives as positives, rather than being a new user.
In all likelihood this user just happened to see something he wanted, possibly wanting to relive his misspent youth with an Amiga.