Not any more.
Basically, all the XT225's are the same after they upped the electrical output in 2001(?), so I wouldn't let year make a difference, rely more on condition. Year doesn't seem to make much difference in price, they're all mostly between $1500-2000. Exceptions once in a while, but that seems to be the usual range.
Expect to pay at the higher end for some accessories such as factory kick start kit which is nice to have due to anemic electrical system. Use heated gear in the winter and you'll be push starting otherwise.