We assume that you play BACKMan City at odds of 1.95, and the stake is £100. The stake reflects your potential winnings and the odds reflect the size of your risk (the higher, the more you can lose). When you play LAY, it’s the same as if you were a bookmaker (you have to pay out your potential winnings, but you can win the stake).
When you play BACK, it is the same as if you were playing “traditional betting.” The higher the odds, the more you can win, and the stake reflects your risk. So you can bet LAY1:2, which means that you bet that the result 1:2 will not happen! No bookmaker offers this possibility. Yet, when trading on Betfair, you can use this for other markets, such as the exact score. While in a Man City – Chelsea match, you would be able to replicate this with a regular bookmaker by betting “1” and “X2”. Trading on Betfair has many exciting advantages, which are provided by BACK and LAYbetting systems.