Adding paypal and eBay fees to your shipping is against eBay policy. It isn't the buyers job to pay for those fees that is why they charge the seller for them. They are fees for selling your item on eBay.
eBay's policy on shipping:
Charges not allowed in Shipping & Handling:
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Tax: Only actual applicable federal, state, country, city, VAT, and equivalent taxes may be charged.
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Additional insurance protection: No additional amount such as “self insurance” may be added. Sellers who do not use a licensed 3rd party insurance company may not require buyers to purchase insurance. This is a violation of state law.
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Tariffs and duties: For cross border transactions, sellers may not collect tariffs and duties. However, buyer may be responsible for actual tariffs and duties as required by country laws.
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Fees related to Shipping & Handling: Gasoline, mileage, time spent at a carrier, time spent packaging the item, eBay and PayPal fees may not be added.
