Had a bit of a look at this yesterday, luckily still on paper.

Ipsw - Out 700 Return 402.20
M'Bdge - Out 600 Return 721.90
Canb - Out 500 Return 227.00
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Total - Out 1800 Return 1351.10

Out of 18 races only 11 winners were from IAS top 4 (and 3 of them returned a slight loss after dutching with S'Tab). I do believe this is well below the average s/rate for IAS, so maybe it was an unusual bad day.
Anyway I may cautiously just look at their strike rate for a while before getting too excited.
And maybe match with WI6 and the ProPun free ratings for Saturdays at least.
Cheers....Mancunian