The difficult policy question in agent-ready commerce is not whether the platform has a return policy page.

The difficult question is whether the platform can safely answer this:

Can an agent tell this buyer, in this region, for this product, through this channel, that this item can be returned under these conditions?

That is a different problem.

A public policy page may exist. A product page may link to it. A support team may understand the exceptions. A human buyer may be able to read the page and make a reasonable interpretation. None of that means an AI agent should treat the page as an authoritative decision source.