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gumaton
10 Feb 10 19:36
Joined:
Date Joined: 21 Jun 03
| Topic/replies: 8 | Blogger: gumaton's blog
Can anyone give an explanation as to roughly how bf calculates their starting price ?

The underlying question I'm trying to answer is: if for example I place a large amount as a normal lay bet but set it to take SP at the off, how does that one bet affect the eventual SP (up or down) ?

Thanks.
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Report Glasgow Brian February 10, 2010 7:48 PM GMT
all depends how much is waiting
another eg - Remember when TWIST MAGIC stole an early lead in the tingle creek BSP was 3.05 while ISP was 9/4
Fast pic boys battered it just after the off while we were SUSPENDED and hence the price
Report Fergus February 10, 2010 7:51 PM GMT
There is some information about the SP available in the help section (see below). If this doesn't satisfy your enquiry then you may be able obtain a satisfactory response quicker on the Horse Racing forum.

http://promo.betfair.com/betfairsp/FAQs_detailedWorkings.html
Report gumaton February 10, 2010 9:43 PM GMT
Thanks guys.


I have managed to get example 2 from

http://promo.betfair.com/betfairsp/FAQs_SPrules.html

modelled in excel, and I now have a much better understanding of what happens.
Report TEABOY February 11, 2010 1:27 PM GMT
Just seen this on the Massey Forum

http://www.adrianmassey.com/bb/viewtopic.php?t=9151&start=0

Apparently the expert on BSP is Horsetrader

"Of course I have far less experience of this than Sarah does (well - who doesn't?)"
.
Report WHOSAYS February 11, 2010 3:09 PM GMT
That Sarah is a waste of space. Told evreyone she was an exbookie but it turns out she just used to work at one. I read he other comments on BSP and she doesnt know what she is talking about
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