Does Amazon refund OUTBOUND shipping costs on an MFN order return?

We have a product that has a separate shipping price. So the buyer pays for the product + shipping as separate items on the invoice.

It is a low value item so we have enabled returnless refunds (which is fine). However, when a customer wants a refund, we see that Amazon refunds the product cost as well as the outbound shipping cost. Even when it is a ‘change of mind’ return request.

Is this consistent with Amazon policy?

P.S. This is not about the cost return shipping label. I could find the policy for it.