In reply to jalapeno:
Paypal is easy once you get used to it. The tactic I use is (In this order)
1) I want X amount for the item I am selling
2) I will use one of the many online paypal calculators to work out how much I have to charge including fees for me to receive X amount.
3) If the buyer does not want to pay what I want they have two options:
3a - Dont try and buy the item I am selling. I am not a stressed seller so no bartering etc.
3b - pay in a different format i.e bank transfer, cash, postal order, meet me and pay direct, cheque etc
It is frustrating though, how everyone just assumes that you are willing to accept Paypal. I have buyers try to force me in to using paypal my response is its my item, I do not need to sell so I dicatate the sale.
Only if I desperately need the money do I allow people to haggle.