Learn the Grand Exchange

The mechanics behind the numbers: how the Grand Exchange really works, written for players who want to stop guessing. Start anywhere - the articles cross-reference each other.

• Grand Exchange buy limits explained - What OSRS Grand Exchange buy limits are, how the rolling 4-hour window really works, why Jagex caps purchases, and how limits shape flipping profit.
• The Grand Exchange tax explained - How the 2% OSRS Grand Exchange tax works: who pays it, the 5m cap, the sub-50 gp exemption, why it exists, and the break-even math every flipper should know.
• How Grand Exchange prices actually work - Instant-buy vs instant-sell, how GE offers match, why the spread exists, guide price vs real-time price, and where OSRS live price data really comes from.
• How to read GE price charts - A practical guide to OSRS price charts: buy/sell lines, candlesticks and OHLC, volume bars, timeframes, and using SMA, EMA and RSI without fooling yourself.
• Bankroll and risk management for GE flipping - How to size positions, spread risk across GE slots, survive dumps and manipulation, and set exit rules so one bad OSRS flip never wipes out a week of profit.

For the applied version, read the complete flipping guide or jump into the Flip Finder.