Not much. I'm too cheap to spend a lot on saddles. Even when I played the saddle swap game on one bike long ago when I started regularly riding for 2 to 3 hours at a time 3 days a week, I only went through one purchased saddle for 60 bucks and three that I had from the past. My bike previous to the current bike I put a 60 dollar saddle on when I built it and then a year later put a better fitting 80 dollar saddle on it. Current bike has what it came with new.
I've found that if I rode a road bike in the slightly aero position that is intended for a road bike in, then saddle comfort was less an issue. It was only when I wanted to sit more upright on my road bikes that saddles ever bothered me much. Probably because the more upright I was the more weight I had on the saddle.