I agree with Archie....
Personally, I don't think that anyone should make anything extra on shipping. Folks should purchase an inexpensive postage scale and charge the actual cost of shipping your items.

Except you forgot the “H” part of the S&H. The “H” part includes packaging materials as previously mentioned.

FEES: The ad fee is your responsibility whether you sell or not (who pays if there is no bids?) Paypal fees are a convenience to both the buyer and the seller (helps his sales because buyers can finish their part of the transaction right away and speed up delivery) but the fees can't be split between them so buyer takes the hit or doesn't use paypal. I think you get the point.

Many sellers could give away their items FREE and still make a healthy profit on shipping alone…. That is wrong. Make your money on the item not the shipping. But those are just my thoughts……..