We have listed some websites listed below that deal with this topic. There are many books to help artists with this complex issue as well. We welcome your suggestions as replies and will add them periodically.
Inside the Stock Image Industry – a news site on the business side of stock photography
Achitectural Photography Almanac – Charging for stock photography
Stock Photography Network FAQs – dated, but an outstanding collection of tips
Linked in: How to License Photos – good overview of licensing
https://theimagecrafters.com/licensing-usage-fees/ Image Licensing and usage fees.
https://fstoppers.com/business/guide-pricing-commercial-photography-part-4-license-fees-8713 Guide to pricing commercial photography.
https://petapixel.com/pricing-commercial-photography/ A beginner’s guide to pricing ccommercial photography.
