Banana tree seed

The Banana tree seed is a members-only Old School RuneScape item — “Plant in a plantpot of soil to grow a sapling.”. Its Grand Exchange buy limit is 200 per 4 hours. Right now it buys at 13 gp and sells at 34 gp — a net margin of 21 gp (161.5% ROI) after the 2% Grand Exchange tax. High alchemy yields 12 gp.

To flip it, place a buy offer near 13 gp and a sell offer near 34 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.