The same trade a guide makes — priced smaller
What a guide's day rate buys is knowledge: where to be, when to be there, what to throw. A published entry sells exactly that, without the boat: proven water plus the context it produced under — the species, the method, the tide stage, the moon, the season, the conditions at the catch. It narrows another angler's search from a coastline to a stretch of water and a window worth fishing. It never promises fish — a guide can't promise them either. What's for sale is a shorter road, not a guaranteed catch.