offer to lay in advance
Someone with the same username asked a similar question
viewtopic.php?f=33&t=11926
The short answer is no, Betfair will fill you at the best price, you can have to wait till the market reaches your desired price and then place the lay but you are not guaranteed to be matched.
viewtopic.php?f=33&t=11926
The short answer is no, Betfair will fill you at the best price, you can have to wait till the market reaches your desired price and then place the lay but you are not guaranteed to be matched.