Hi Venu,
Who is this Tanya! I guess you two r familiar, rite!! :^O
Jokes apart, yes you have to pay fees to eBay for selling any item. If the item does not sell, you'll not be charged anything (except the insertion fees), but if it sells you'll have to pay a % of Final Value. If the buyer does not pay, of course you can get back a full-refund! Any listing is up on site for max 7 days (10 if you pay more). If you buy a shop, you can list longer. Apart from this - No time limit for selling. 😛
(you wont mind giving Tanya's number, wud u 😉 :-D)
See Ya!