Listing fee dependant on starting price and category (cars different)
You can schedule your item to start on a particular day if you don't want to start it straight away.(wasn't sure they charged a fee for that) Looks like first 20 a month free then 0.06p
Optional fees--like buy it now .
You also have to pay final value fee (usually 10%) (what it sells for including the value you have for P+P)
Paypal will also charge you a fee for receiving money a small percent plus a fixed amount. (check their fee list)
Best postal options ive found locally is My Hermes but Royal Mail had an offer on for items up to 1 or 2kg. Also bear in mind the value of what you are selling and maybe the need to include postal insurance in your P+P . Good pair of kitchen scales to weigh your item with the packaging to work out postage. Bit of a nightmare with royal mail and package sizes. Always ask for a certificate of posting if you use Post Office (doesn't cost anything but it will give you a receipt with post code delivered to.