Seller asked for PayPal fees after the sale. Should I pay them or not?

I like PayPal and never ask for the fee's when I sell. I just set the price taking them into account. Shipping depends on item and where shipping to. I would not have paid the fee's but may have agreed to split the difference with the seller if he insisted. It is not that much money. 

While I’m not a prolific buyer or seller on Audiogon, I have happily completed a number of transactions here. I endeavor to be as straightforward and transparent as possible, which means that if it were the policy, I would clearly state that the PayPal fees are in addition to the asking price. In my own case however, I don’t think it’s fair to ask for this fee on top of the asking price if it’s the only available option the seller offers, so in my listings I clearly state that the PayPal fee is included in the asking price, and, in agreement with the above post, the asking price takes this into account. IMO trying to extort a PayPal fee after the agreed-upon price has already been paid is highly unethical.

Give him nothing keep on trucking!!!!!