If you don’t want a part of your body to get sore, then that part shouldn’t be pushing against something that doesn’t move along with it. That’s the thinking behind the vabsRider bicycle saddle, the two sides of which pivot in time with your pedaling.
I doubt this mechanical seat will be cheaper than an entry level , but properly built normal saddle.
And frankly the fit matters the most. Most shops will give your seat a quick review/adjust if you go in and buy anything.