How much does it cost to fix a Magento bug?

Most single, well-defined Magento bugs are fixed for a flat $99 (~4h @ $25/hr) on the Quick Fix tier, turned around in 24-48 hours. A batch of bugs, or one deep root-cause like stuck indexers or a DI mess after an upgrade, runs $499 (~20h @ $25/hr) on the Bug-Fix Sprint. Store-down emergencies and ongoing on-call are scoped on the Emergency / Retainer tier, including a $2,499 stabilization sprint (~100h @ $25/hr). You get a fixed price before any work starts, never an open-ended hourly bill.