Betfair Laying
 

I have noticed that all the races get pre-laid with lay bets. The field is laid example Balina race 9 has the field laid for $1.03 and $55 available and also laid for $1.13 with$8 available. If you go through the card you will see that this carries through all races.
What is the strategy here? Does it pay off? and how is it done? Do these ambit bets get matched?
Does the reverse happen and ambit bets also get placed and matched. Beton

I tbihnk the idea is to catch people who make the wrong bets. For example you mean to bet at $10 but you accidentally hit lay instead. or the opposite happens which is you mean to lay at $1.10 but you hit bet.

It also catches those trying to lay at under the minimum bet size as those people always put the $5 bet at $1.01 or $1000. If it does the wrong way around they get matched at the small/large odds.

Also some bots put in bids at the available price for bet/lay and dpon't check the market percentage. If the market has been delayed and there isn't much money in there and the bots have not checked this there is a chance they will back/lay at the extreme prices.

I hope that makes sense. Its basically trying to take advantage of people making mistakes.

Thanks UB
I found an answer online http://www.easytraderpro.co.uk/4563...ofitsinplay.pdf
It is a start. Whether ther is something in there will bear research. Beton

Thanks for the link Beton, a very good solid observation from the author,

"In other words, we can only take advantage of someone else’s irrational state of mind if we are rational ourselves. You don’t want to join the mug
punters who run on emotion and not logic"

Definitely something to learn from.