New flippers chase the biggest margin they can find. Experienced ones chase gold per hour. The gap between those two ideas is where most flipping profit is quietly lost.

The buy limit problem

Every item has a 4-hour buy limit. A flip with a huge margin per item is worthless if you can only buy a handful every four hours. Meanwhile a modest margin on something with a large buy limit and heavy volume can out-earn it many times over.

Profit per hour ≈ profit per item × buy limit ÷ 4. It is a ceiling, not a promise — but it ranks opportunities far better than raw margin.

How to read it

  • Sort by GP/hour, not margin, when you want steady income.
  • Cross-check volume: a great GP/hour figure means nothing if nobody is trading the item.
  • Use big-margin, low-limit items as a side bet, not your main engine.

GP/hour needs capital context

A flip that shows an enormous GP/hour figure isn't automatically the right choice — it only pays out at that rate if you can actually afford to buy up to the limit. An item capped at 10,000 units with a 50 gp margin looks fantastic on paper, but it needs 500,000 gp or more just to fill the limit once. If your bankroll can't reach that, the real GP/hour you'll experience is far lower than the number on the screen. Always weigh GP/hour alongside how much capital it takes to actually hit that limit, not just the headline figure.

Why GP/hour beats total profit as a comparison

Two flips can show the exact same total profit and still be very different opportunities, if one takes an hour to fill and the other takes a full day. Total profit alone doesn't capture that difference, but GP/hour does — it normalizes for time, which is ultimately the scarcer resource for most players. A flip with a smaller total profit but a much faster fill time can easily out-earn a bigger, slower one once you account for how many times you could repeat the fast flip in the same window the slow one occupies.

Realistic versus theoretical GP/hour

The margin-times-limit calculation gives you a ceiling, not a guarantee. Your actual GP/hour also depends on how much attention you can realistically give it — placing offers, collecting completed trades, and re-placing new ones all take real time and real presence. A flip that mathematically supports an excellent GP/hour figure is worth far less if it requires you to babysit it constantly to actually realize that rate. Factor in your own available attention, not just the theoretical maximum the numbers suggest.

Stacking multiple flips to approach the theoretical ceiling

Since no single item can be bought past its own 4-hour limit, the only way to meaningfully increase your total GP/hour beyond what one item offers is to run several flips simultaneously, each filling its own limit independently. This is why experienced flippers rarely rely on just one item at a time — spreading capital across three or four solid, liquid flips lets your total GP/hour approach the combined ceiling of all of them together, rather than being capped by whichever single item you happened to pick.

GP/hour as a way to compare completely different activities

One of the most useful things about thinking in GP/hour is that it lets you compare flipping against entirely different money-making methods on equal footing — a combat activity, a skilling method, or a flip can all be reduced to the same unit, even though they have nothing else in common. This makes it much easier to honestly evaluate whether flipping is actually your best use of time on a given day, compared to simply assuming it always is because it's what you're used to doing.

The tracker's Market list has a dedicated GP/hour column so you can rank flips by what they can actually make you, limit included.

Worth remembering: a high GP/hour figure calculated from a stale price check is just as misleading as a stale margin figure — refresh your numbers right before acting, not from whatever you last happened to look at.