I back at 1.01 for £100 so I win a pound every bet. 1% return on investment every few minutes.
I haven't lost a bet yet but when I do I'll just have to stake £10,000 at 1.01 once to win my lost £100 straight back. The chances of me losing twice in a row at 1.01 are 10,000/1.
If I do ever...