These gambles/drifts take on a life of their own on the exchanges and they often bear no relation to the true chance of the runner. It takes a lot less money to set the snowball rolling than most people imagine. Back it if you think its overpriced .
It needs next to b***** all to shift prices in some races. I managed to create a fall from 11 to 8.2 early in a market yesterday, and it took only a fiver to do it. On the same basis there’s no reason why a few comparatively small lays shouldn’t push a price the other way if one layer has ‘taken a position’.
Cant for the life of me remember the horse from a few weeks back who was put in at 25/1 in the RP forecast, someone flagged it up here as a monster gamble. Took just £1500 quid to knock it into 5/1 on Betfair. Was beaten as I recall.