Spot the odd one out in the latest betting on TAB Sportsbet for the AFL/NRL premiership double:

ST KILDA-BRISBANE BRONCOS $20.00
WEST COAST-BRISBANE BRONCOS $20.00
ESSENDON-CANBERRA RAIDERS $25.00
ST KILDA-NORTH QUEENSLAND CO $26.00
WEST COAST-NORTH QUEENSLAND $26.00
BRISBANE LIONS-BRISBANE BRON $28.00
ST KILDA-PENRITH PANTHERS $31.00
ST KILDA-StGEORGE ILLAWARRA $32.00
WEST COAST-StGEORGE ILLAWARR $32.00
GEELONG-BRISBANE BRONCOS $33.00
ST KILDA-BULLDOGS $33.00
WEST COAST-BULLDOGS $33.00
ST KILDA-CRONULLA SHARKS $36.00
ST KILDA-MELBOURNE STORM $36.00
ST KILDA-SYDNEY ROOSTERS $36.00
WEST COAST-CRONULLA SHARKS $36.00
WEST COAST-MELBOURNE STORM $36.00
WEST COAST-SYDNEY ROOSTERS $36.00

The double in question (and I'm sure you can pick which one I mean) should be at least around the $500 mark and it would even be big unders at that price, so I don't know what's gone on here. Perhaps some punter with much more money than sense had an ENORMOUS bet on that double and they've moved it in accordingly. Otherwise, it's just an incredible mistake.