I would not buy a used Brooks.

I have 4 Brooks saddles - three Finesses and a Professional S. The first Finesse I got went on our tandem. My position on the tandem was very upright and that's the way the leather conformed.

About a year later I got a road bike and another Finesse went on that. The poor tandem did not get ridden for a while. After about ten months of no tandeming, we took it out again. Now I wanted to ride in a more aerodymanic position behind my husband. But the saddle said no. It made for a very uncomfortable hundred mile ride. Same butt, but the saddle conforms to how you sit on it.

We have retensioned that saddle and now it's on my road bike in the trainer and working out nicely. But it has taken a while for it to get to be the shape I now want it to be.

V.