No. There is no legal way to get infinity of every item because otherwise, everybody would be doing it & Runescape would become very boring, very quickly.
Item id's for every item known to runescape are on: itemdb.biz. Just search the item you want and it tells you the id.
No.
Just search for 'Runescape item ID database' and you'll find multiple services to search for item ID's.
There is no NPC, place, or item in RuneScape called "Kela."
The price changes everyday for pretty much every item in runescape. So by the time I would tell you the price would probably be different.
No.
The only way to do this is to cheat, but i advise against it, cheating can cause your game to crash etc.
bronze dagger
Wiki Answers will not provide the information to break the rules of RuneScape.
On runescape there are no code to get item
Yes
Every item in fertilizer used for growing hemp is legal.