Advice, paint fading

A few of my completed babies have paint that is fading, complexion not even anymore in spots; can this be corrected? I use genesis. Do I need to drastically drop the price, report the flaws and try sell as is? Any suggestions?

How long ago did you complete them? Were there exposed to the sun?
If they are for sale I would definitely disclose the flaws.

They were painted several months ago and have not been in the sun. They were wrapped in sheets and stored in large plastic bins with lid vented for air. only a couple are fading and not sure why. I always bake at 265 and use a thermometer. I check to ensure no paint is rubbing off with qtip. So strange. It’s only the limbs, not face