Yep, definitely check with
felinevet.
I have been scouring eBay for quite a while looking for a cheap Spirit without luck. There are usually only 1 or 2 used Spirits listed, but they always wind up going for as much as a new one!? Whacky people. Sometimes they even wind up paying more because they don't factor in the exhorbitant shipping charges compared to free or at least reasonable shipping from reputable dealers.
Anyway, your best bet is felinevet or one of the banner advertisers here. They actually do have great prices and are great to deal with.