Ironwood plank

Ironwood Plank is a members-only item on the OSRS Grand Exchange in the bars category.

In-game examine text: "A plank of robust ironwood."

It has a Grand Exchange buy limit of 13,000 every four hours, a high alchemy value of 900 gp, and item ID 31435.

View on OSRS Wiki

Ironwood Plank currently has a flip margin of −78 gp, which isn't profitable to flip right now despite 74,752 trades over the last 24 hours.

Items with negative or zero margins like this are better watched than actively flipped until the spread widens.