I agree they are the methods that are described in the ebay accepted payment policy.

When you create a listing however, it provides you with options including payment on pick up or other option (no mention of cash).

From paypal user agreement In relation to eligbility for buyer protection:

Eligibility

S10.1 You may be eligible for the PayPal Buyer Protection Policy if all the following requirements are met:

Your purchase is not for:

6. Items you collect in person or arrange to be collected on your behalf;