OSRS Buy Limits Guide — Complete Grand Exchange Limits

What Are Buy Limits?

Every tradeable item on the Grand Exchange has a maximum quantity that a single account can purchase within a 4-hour rolling window. This cap is known as the item's buy limit. Once you hit the limit for a particular item, you cannot buy any more of it until your timer resets. The limit applies per account and per item — buying Nature runes does not affect your ability to buy Lobsters, and your main account's limits are completely separate from your alt's.

Buy limits were introduced as a safeguard against market manipulation and hoarding. Without them, a wealthy player could buy the entire supply of a critical item, artificially jack up the price, and then dump their stock at a profit. The limit system ensures that no single player can corner the market on any item within a short timeframe. While this protects the broader economy, it also means flippers must plan carefully around these restrictions.

You can look up the buy limit for any item in our Item Database. Each item page displays the buy limit alongside current prices, margins, and trading volume, giving you all the data you need in one place.

How the 4-Hour Timer Works

The buy limit timer is a rolling 4-hour countdown that starts the moment you purchase your first unit of an item. If you buy one Nature rune at 10:00 AM, your timer for Nature runes starts at that exact moment and will reset at 2:00 PM. Any Nature runes you buy between 10:00 AM and 2:00 PM count against the same 13,000-unit limit. At 2:00 PM, the window resets and you can buy another 13,000.

A critical detail that many players misunderstand: the timer starts from your first purchase, not your last. If you buy 1,000 Nature runes at 10:00 AM and another 12,000 at 1:55 PM, your timer still resets at 2:00 PM — not at 5:55 PM. This means front-loading your purchases at the start of a window is always optimal. Buy as much as you can as early as possible, and you will get your next allocation sooner.

Each item maintains its own independent timer. Buying Sharks does not start or affect the timer on Super combat potions. You can have dozens of different timers running simultaneously, one for each item you are actively trading. This is why diversifying across multiple items is so effective — while one item's limit is cooling down, you can be actively buying others.

The timer persists through logouts, world hops, and disconnections. It is tracked server-side, not client-side. If you buy 50 Abyssal whips and then log out for an hour, you come back with the same remaining limit and the timer has been counting down the entire time you were away.

Common Buy Limit Tiers

Buy limits are not random. Items are grouped into tiers based on their category, rarity, and typical usage. Here are the most common buy limit brackets you will encounter:

• Runes: 13,000+ per 4 hours. The highest buy limits in the game, reflecting the massive consumption rate of runes in combat and skilling.
• Food and potions: 10,000-13,000 per 4 hours. High limits because these items are consumed constantly in PvM and PvP.
• Skilling resources: Varies widely from 6,000 to 13,000 depending on the resource. Logs, ores, herbs, and seeds all fall into this range.
• Ammunition: 7,000-11,000 per 4 hours. Arrows, bolts, and darts that are consumed during ranged combat.
• Common weapons and armour: 70-125 per 4 hours. Standard combat gear that most players use and trade regularly.
• Rare and high-value items: 8-15 per 4 hours. Boss drops, raid rewards, and other endgame equipment with low supply and high demand.
• Very rare items: 2-8 per 4 hours. Third-age equipment, twisted bows, and other ultra-rare items with the tightest restrictions.

These tiers are guidelines — individual items may differ. Always check the specific buy limit on an item's page before committing capital to a flip. An item with a surprisingly low buy limit can trap your gold in a position with limited profit potential.

How Buy Limits Affect Flipping

Buy limits are the single biggest factor in determining how much GP per hour you can actually earn from a flip. The formula is straightforward: profit per 4-hour cycle = margin per item x buy limit. To get your hourly rate, divide by four. This means a seemingly mediocre 50 GP margin on a rune with a 13,000 buy limit (650,000 GP per cycle, or 162,500 GP/hr) can vastly outperform a flashy 100,000 GP margin on a rare item with a buy limit of 8 (800,000 GP per cycle, or 200,000 GP/hr) — and the rune flip requires far less starting capital.

This is why the Flip Finder ranks items by profit per hour rather than raw margin. An item with a 500 GP margin and a 10,000 buy limit generates 1,250,000 GP per hour. An item with a 5,000 GP margin and a 70 buy limit generates only 87,500 GP per hour. The first item is fourteen times more profitable despite having one-tenth of the per-unit margin.

Buy limits also affect how quickly your offers fill. High-limit items tend to be high-volume items, meaning your buy offers complete faster and you spend less time waiting. Low-limit items often have lower trading volume, which can mean your offer sits in the GE for extended periods before filling. Time is money — every minute your gold is tied up in a pending offer is a minute it is not generating profit elsewhere.

Working Around Buy Limits

Smart flippers do not fight buy limits — they work with them. The most fundamental strategy is to use all 8 Grand Exchange slots simultaneously. If each slot holds a different item, you have 8 independent timers running and 8 streams of profit flowing at once. Never leave a GE slot sitting empty when you could have an offer in it.

Stagger your buy timers across different items so they do not all reset at the same time. If all 8 of your items hit their buy limit at noon, you have nothing to do until 4 PM. But if you start buying different items at different times, some timers will be resetting every 30-60 minutes, giving you a steady flow of opportunities throughout the day.

Diversify across price ranges. Mix high-limit consumables (runes, food, potions) with lower-limit equipment flips. The consumables provide steady, low-risk income while the equipment flips offer bigger per-unit margins. This balance ensures you always have something to trade regardless of which timers have reset.

Consider using the Buy Limit Timer to track exactly when each of your items will become available again. Knowing the precise reset time lets you place your next buy offer at the perfect moment, minimizing downtime between flip cycles.

Finally, if you are serious about maximising GP per hour, focus the bulk of your capital on high-limit items. An item with a 10,000 buy limit and a 200 GP margin earns 500,000 GP per cycle with relatively low capital requirements. You can run multiple high-limit flips simultaneously, keeping all your gold active and generating returns even when your big-ticket item timers are on cooldown.