Flipping — buying low and selling high on the Grand Exchange — is the lowest-risk money-maker in Old School RuneScape. This guide covers the mechanics that actually matter, how to pick items, and how to set offers that fill.
Flipping means buying an item on the Grand Exchange (GE) at one price and reselling it at a higher price, pocketing the difference (the "margin"). You're not gathering or crafting anything — you're a market maker, profiting from the gap between what buyers will pay and what sellers will accept. It scales with your cash stack and requires almost no clicking, which is why it's the go-to passive income for mid- and late-game players.
Since 2021, OSRS charges a 2% sales tax on most GE sales, deducted from the seller, rounded down, and capped at 5,000,000 gp per item. Items selling under 50 gp are exempt, and a few items (like the Old School bond) are exempt entirely.
Every item has a 4-hour buy limit — the maximum quantity you can purchase from the GE in a rolling four-hour window. This caps how much profit a single flip can produce per cycle. Your realistic profit for one flip is margin × buy limit. High-limit consumables (potions, food, runes) let you move huge volume; low-limit gear flips less often but with bigger per-item margins.
Staples that trade tens of thousands to millions of units per day: gems, ores, bars, runes, arrows, cannonballs. Offers fill almost instantly, so profit comes from turning your capital over many times. Best if you can hop to a GE often.
Rare gear, niche supplies, and high-value drops trade slowly but carry much wider spreads. Each flip earns more, but you may wait hours for a fill — so don't tie up all your capital here expecting a fast turnaround.
The classic mistake is bidding at the absolute lowest price you've ever seen the item hit — that offer almost never fills. A good offer balances two things: the margin if it fills, and how often it will fill. The sweet spot is usually a bid just below where sellers are currently dumping, and an ask just above where buyers are currently paying.
PocketGE's Target Buy / Target Sell does this math for you — it picks the offer prices that maximize expected profit (fill probability × after-tax margin) from the item's recent trade history, so you're not guessing.
No. Flipping is a core, intended use of the Grand Exchange. Real-world trading (buying gold for real money) is bannable; flipping in-game gp is completely legitimate.
You can start with a few hundred thousand gp on high-volume items, but flipping scales with capital — bigger stacks unlock bigger absolute margins on high-value gear.
There's no single answer; it depends on your capital and how often you can check the GE. Use a live margin scanner to find what's profitable right now rather than chasing a static "best item" list.