The Grand Exchange was officially introduced into RuneScape following the update on the 26th November 2007. As such, it does not exist in Old School RuneScape, which is a backup from August of the same year.
The grand exchange is a large area, used for banking and trading. It is a special system where you can put in offers to buy or sell your items. It is extremely popular and extremely helpful.
No, it's only in the main Runescape the Grand Exchange was made.
Grand Exchange
The first Runescape player to say g.e. for grand exchange was WEEDYMUN.
grand exchange
Grand exchange
Grand exchange
At the Grand Exchange.
the grand exchange on runescape
There is no special "Grand Exchange account". You have your RuneScape account (just log in normally); you go to the Grand Exchange and start buying and selling things. First, you have to talk briefly to the guy (NPC) with the megaphone, south of the Grand Exchange. This is once only.
buy it on grand exchange
at Grand Exchange
Grand Exchange