Stitch guide pricing

I completely understand the cost of this hobby, the ways to make it affordable, etc etc

But stitch guides confound me. I recently got one because of a pre-market sale, so the stitch guide was essentially free with the canvas and it's normally $50. The guide was interesting but definitely not something I'd pay $50 for, especially since I don't plan to use many of the suggestions (and most of it was tent stitch anyway).

I understand experienced people take their time to make these, but I truly don’t understand why they cost so much. I've bought and used more detailed knitting and crochet pattern documents for $3-20 and to me, that's essentially the same thing (if not more effort) than a stitch guide