The short version
- Any fixed list of best items goes stale, because a margin exists only while few people are exploiting it.
- Run four filters in order: volume, then margin after tax, then profit per buy limit, then whether your bank fits.
- Consumables are the most reliable category — items that get used up generate permanent demand.
- A margin above about 35% almost always means a stale quote rather than an opportunity.
Most articles answering this question hand you a list of item names. That list was accurate the week it was written and is now a liability, because the whole point of a margin is that it exists when few people are exploiting it.
What survives is the method. This guide covers what actually separates a good candidate from a wide spread, so you can run the check yourself whenever you sit down to trade.
The four filters, in order
1. Volume first, always
Before you look at a single margin, check how much the item trades. Volume decides whether the rest of the numbers mean anything.
A rough working scale, using 24-hour units traded:
| 24h volume | What to expect | Use it for |
|---|---|---|
| Over 100,000 | Fills in minutes at a fair price | Learning, fast cycling |
| 20,000–100,000 | Completes within a session | Everyday trading |
| 3,000–20,000 | Workable, price competitively | Wider margins, patience |
| Under 3,000 | Thin — capital can stick | Avoid unless you know why |
| Under 500 | Effectively untradeable | Nothing |
Daily traded volume is the natural starting point, and it is the first thing to look up on any candidate.
2. Margin after tax, not the raw spread
A 2% spread is break-even. Anything you evaluate should be meaningfully above that.
Be careful with percentages on cheap items — a 3 GP margin on a 100 GP item is 3%, which sounds excellent until you notice you would need to move a hundred thousand units to make anything. Look at margin and ROI together, and read margin and ROI explained if that distinction is not yet second nature.
3. Buy limit large enough to matter
Multiply the margin by the buy limit. That product is what the item is worth to you per four-hour cycle, and it is the number to compare across candidates.
Items with tiny limits — high-end weapons, rare drops — cap out at a few hundred thousand GP per cycle no matter how wide the spread looks. Items with limits in the thousands can return millions from margins that look unimpressive. See how buy limits work.
4. Capital that fits your bank
The full buy limit of an item should be affordable, and ideally should use a meaningful share of your capital. An item whose full limit costs 20,000 GP is not a useful trade for someone with 200M — it cannot absorb enough money to be worth an offer slot.
Our flipping guides break this down further.
Categories that reliably behave well
Rather than naming specific items, it is more durable to know which kinds of item tend to satisfy the four filters.
Consumable supplies. Potions, food, runes, ammunition. Players burn through these constantly, so demand is continuous and limits are generous. This is the most reliable category in the game for flipping.
Skilling materials. Logs, ores, bars, herbs, seeds. Supply comes from players gathering, demand from players training. Both sides are steady, and prices move in understandable ways when a skill becomes fashionable.
Mid-tier equipment. Gear that a lot of accounts pass through on the way up. Not the top-end items — those trade too rarely — but the tier below, which has genuine turnover.
Processed goods. Items produced by converting something else: bars from ores, potions from herbs, bolts from tips. These often have margins driven by how many people can be bothered doing the conversion.
Categories that look better than they are
The most expensive items in the game. Wide spreads, but volume in single digits per day. Capital gets trapped and prices are unstable. See most valuable items for why these are best understood as investments rather than flips.
Newly released items. Prices swing violently for weeks after release as supply catches up with demand. There is money here, but it is speculation rather than flipping.
Anything with a spread that looks too good. If an item shows a 40% margin, the usual explanation is that nobody has traded it recently and one of the two prices is stale. Check the volume and the last trade time before believing it.
Signals worth watching over time
Once you are comfortable with the basics, a few patterns are worth tracking:
Game updates. Nothing moves prices like a patch. An item that becomes required for new content will rise; an item made obsolete will fall. Reading the weekly patch notes is the single highest-value habit a trader can develop.
Volume trends, not just volume. An item whose daily volume is climbing is attracting attention, which usually widens spreads before it narrows them.
Time of day. Prices and fill rates differ noticeably between peak and off-peak hours. Offers placed during quiet periods sometimes fill at better prices simply because there is less competition on the same side of the book.
Divergence between the last hour and the daily average. This is what to look for — items where something changed recently and the market has not settled.
Running the check quickly
The four filters take about thirty seconds per item once you know where to look, but doing it across the whole catalogue by hand is not realistic. Applying them through a tool that ranks the whole catalogue is the practical way to narrow 4,600 items down to a shortlist worth checking properly.
Whether you use a screen or do the checks yourself, the underlying logic should be identical. If a tool recommends something that fails the volume test, ignore it.
The screen, as a procedure
Rather than a list of items that will be wrong within a month, here is the filter to run yourself. It takes about a minute per candidate once you are used to it.
- Start from volume, not from margin
Sort by volume rather than by margin. Starting from margin means starting from a list sorted by how misleading a number is; starting from volume means starting from things that actually trade.
- Apply your capital filter
Work out what a full buy limit costs. Anything above about a third of your bank goes on a list for later, not into a slot today.
- Check the margin after tax
Below about 1% net on a liquid item, the slot is better used elsewhere. Above 3% on a genuinely high-volume item, be suspicious rather than pleased — check the chart before you commit.
- Read one week of history
You are looking for a spread that has been stable, not one that opened today. A margin that appeared in the last few hours usually means the price is moving.
- Check both sides of the book
Volume figures combine buys and sells. An item with 200,000 daily volume that is 95% one-directional is not liquid in the direction you need.
Categories that reliably work, and why
The specific items change. The categories do not, because the reason they work is structural.
| Category | Why it keeps working | What to watch |
|---|---|---|
| Runes | Destroyed on use, every account uses them | Margins compress when attention arrives |
| Ammunition | Consumed by every hour of combat | Tied to which ranged setups are popular |
| Food and potions | Consumed constantly, high limits | Seasonal around new content |
| Raw skilling materials | Both sides are players, both run continuously | Follows what skill is fashionable |
| Processing inputs | Margin exists because people skip the middle step | Dies if the process is ever automated |
The single question behind all of these: is this item destroyed when it is used? Consumables generate permanent demand. Equipment is bought once and owned for years.
Red flags
Building a list you can reuse
The output of this process should be a shortlist of eight to twelve items you know well, not a fresh search every session. Knowing an item — its normal spread, how fast it fills, what a bad day looks like — is worth more than finding a new one, because it lets you recognise when something is genuinely unusual rather than merely unfamiliar.
Re-run the screen properly every couple of weeks, and after any update that touches your categories.
Common questions
- What are the best items to flip in OSRS?
- Any fixed list goes stale, because margins exist only while few people are exploiting them. The durable answer is the method: check 24-hour volume first, then margin after tax, then whether the buy limit makes the cycle worth a slot, then whether you can afford a full limit.
- How do you find good flips in OSRS?
- Filter by trading volume before anything else, then rank what survives by profit per buy limit rather than by raw margin. A wide spread on an item that trades forty times a day is not an opportunity.
- Why is my flip not selling in OSRS?
- Almost always low volume or an over-optimistic price. Check the item 24-hour trading volume: if it trades only a few hundred times a day, an offer at the edge of the spread can sit for hours.
