Thanks everyone. Getting all of the minis individually and reliably (questionable delivery and inventory from third party dealers on Amazon) was nearly impossible, so I spent the extra $10 and bought another set. I have ordered the first mini for the layer up set, and have plenty of time to get the other two.
Is there a way to buy another set of just the figures from the Core Skills set? My son and I are learning to paint together, and we'd like to work on the same figures and go through all the steps with all three figures. Same question for the Layer Up set, as that is waiting in the wings.