What's even more funny is sometimes buyers negotiate with sellers. Sellers end up reducing sale price a little bit. Difference between posted price and negotiated price is ALWAYS a larger gap than just eating the cost of the 3% PayPal charges. Simple solution is sellers should incorporate that 3% into their sale price without having to mention it. Oh, you're willing to let it go for as little as $100 as friends and family payment? Cool. Post it for sale for $105 rock bottom price. Potential problem avoided.
Can't believe some sellers and buyers are cheap as .... and have the need to mention paypal fees in the first place when their bikes cost an absurd amount as is. You're probably already getting whatever you're buying at a discounted price anyway. What the hell is an extra few bucks whether you're paying it, buyer or seller. Just ridiculous.