Triptych

Our (Zoom) camera club meeting looking at how to create panels in the Print module of Lightroom. I decided to use some of the many images I have taken of gateposts in recent days into a triptych.
I am not sure where to take my gateposts project. It is feeling like a niche interest and I have remembered seeing in a gallery  shop a photo book on Bus shelters of Eastern Europe, which was in three volumes. Is there a market for three volumes on gateposts?