I've noticed that sometimes there are differing amounts of money available in the market at the same time on Betfair and Bet Angel.
For example just now I was looking to lay Serena Williams in a tennis match at odds of 1.20. BetAngel showed that there was 4k available at that price but the Betfair website showed there was 20k available at that price!
This seems to be a regular occurrence.
Has anybody else had this problem?