paying a sellers paypal fees

I just ask what I want with everything considered.

exactly, consider the fees when you price your part.

I have seen sellers asking for their paypal fees. I say "F" that! I will send a postal money order, not good enough? I won't buy your part.

The seller is making the choice to accept paypal, why should I pay for HIS choice??

Thats fine also. If you want to pay gas both ways to the post office, plus the charge for the M/O, plus wait the extra 3 or 4 days for the M/O to reach the seller thats up to you.