Why did different buyers give me different offers for the same car?

Different buyers have different cost structures, inventory needs, and resale channels. A buyer who specializes in your make and model can sell it faster and at a higher margin, so they can afford to pay more for it. A buyer with excess inventory in your car's segment may offer less. Market conditions at any given moment also affect what buyers are willing to pay. This is why getting multiple offers almost always reveals meaningful differences.