I would like to suggest, Quest item sets. These sets would be very similar to a Dwarf cannon set or Super potion set. Inside each set would contain all buyable items in their final form: Example (Bucket of milk) for Cooks assistant. Quest item sets should be priced a bit higher than their individual items sold separately as this would provide convenience to the player, reducing the time spent searching and buying item by item to complete a quest. Quest items sets would also bring a new form of money making, for these sets would have to be put together and sold on the G.E. & might spark more player's interests on completing quests, bringing more players to end game content.
Example: Cooks assistant (Pack)
1. Pot of flour | Buck of milk | Egg
Sure, is this a rs3 or osrs suggestion? Could have their examine in ge to describe what's inside for which quest. Would quest item sets have a different buy limit since they're usually only used once per account? And suggestions should be moved to suggestion forum.