Yes, after a while they will become saleable just like the Santa Hat used to be a holiday item.
no its not sellable and probobly never will be
There are 21 saradimin items on RuneScape.
No.
The best items in RuneScape are Partyhats, Divine and Elysian Spirit Shields, and Christmas Crackers Moneywise.
There is no way to clone items on Runescape, this was however a commonly used scam to get players to give them items to supposedly clone, but they don't get cloned.
While on RuneScape PVP worlds, if you die, you only lose the items you are carrying, not those in your bank, never in RuneScape will a death directly affect your banked items.
Just surf over to treasure beach, and use your itemfinder. The amount of items varies, though. Sometimes, it will only be a couple ultra balls, while other times it will be a few sellable items.
No. They do not.
There is no way to duplicate items in Runescape. Although there was a bug once which did allow a person to duplicate party hats, this was quickly fixed.
No. You can lend items without being a member.
Only items obtained through quests.
If your not cheating, then the fastest way is to buy high level logs and fletch them. Since arrows and bows are sellable you'll be loosing only some of the money.