Hey @lolitsjohnnyboy thanks for reaching out. We have two tutorials in the WooCommerce Developer Resources blog focused on extending the Analytics reports:
I hope it helps.
Hey @tim983 thanks for reaching out.
If I understand you correctly, each fine art print is a different product and some of them are showing up on sale even if they don’t have a sale price defined in the admin page, correct?
Can you please try to switch to the default Storefront theme and only WooCommerce plugin is enabled and see if this works?
Let us know how it goes.