Football - Best price on back bets

[scesc]

Warning - Very basic question on how bets are filled.

I'm looking to place a Back bet but only after a first goal is scored.

In this particular market, my only indication of a goal being scored is going to be that the back price of the market has gone out, say to 1.5

if I therefore place my back bet to be 1.5, what happens if the back price went to 1.55 immediately after a goal was scored. Will Bet Angel / Betfair get me the best price, or will it fill it at 1.5 ?

[scesc]

Think I've answered my own question in practice mode. Wasn't too sure if it worked exactly the same, but appears to take the best price available.