If you use Betfair SP without a limit then you can expect to get fleeced.

If you use Betfair SP with a limit then you can expect to get fleeced. But not as much.

BSPs have been matched @~1.01.

So all a fleecer has to do is offer lays much lower than true odds.

On occasions those will be matched by the Betfair SP algorithm.

Particularly for large SP bets.