4th December 2007, 09:20 PM
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Member
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Join Date: Jan 1970
Posts: 4,441
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Here's a nice example of the bias 
R1 Kenilworth Oceans Away
SA TAB $1.20
My price to back
$1.45 matched
$1.48 matched
$1.52 matched
$1.57 matched
$1.61 matched
$1.65 matched
$1.69 matched
Average odds $1.61 on a $1.20 shot
34% better less 5% commission 29% better.
Overall loss at TAB prices 10%
Overall profit at Betfair prices 19%
Minimum traded price $1.38
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