PayPal rules

When you sign up to Paypal as a seller, you agree to pay their fee.

If you ask otherwise, you risk losing your account if & when you are reported.

If you want to use Paypal, read their rules & comply, this is not rocket science.

You cannot use ebay and want the BUYER to pay the Pay Pal fee.
Yes, that's in their agreement, rules.
A private party sale, on the internet, between both the buyer and seller, Pay Pal has no control over wording in an ad if you want to be paid Family and Friends, and your buyer pays you thru that format.
You know how much business Pay Pal would loose, if they said no Family or Friends payments.

Pay Pal is making 30 cents on the transaction wither it's Family or Friends, or Goods & Services, so you do the math on how many transactions Pay Pal does each day, for the revenue they bring in.
And it's even more on a foreign transaction, say Canada, Europe, Asia.