Old school bond

An Old school bond is an in-game item that allows a player to pay for membership with in-game resources.

Tradeable membership bonds may be traded to other players and sold on the Grand Exchange; however, when the transaction is complete, it will become untradeable. A membership bond is always bound to a player when it has not been redeemed or traded to another player. It is always kept on death, even when inside the wilderness. Both tradeable and untradeable versions may be stored in a player's bond pouch, accessible via the Settings interface. Players can only put an offer for one bond at a time.

Uses
When bought using real life currency, bonds are tradeable. Once traded to another player for an in-game sum of money or items, they become untradeable. Bonds can be made tradeable again for a payment of 10% of their Grand Exchange value.

At any time, whether tradeable or untradeable, bonds can only be redeemed for Membership:
 * 14 days for 1 bond
 * 29 days for 2 bonds (1 day extra compared to 2 bonds separately redeemed)
 * 45 days for 3 bonds (3 days extra compared to 3 bonds separately redeemed)