Starting Price (general terms)
The odds determined by the official starting price reporters
on the racecourse at the start of the race, which is an average
of the odds being offered at the racecourse. For certain races,
some internet and other off-course bookmakers will only quote
SP for each participant rather than different odds. This means
that the off-course bookmaker has not determined their own prices
for this race and is letting the market be made at the racecourse.
Typically this happens when the volume of money and the number
of bets placed on this event at the off-course bookmaker is
too low to make a representative market of their own. Accepting
the Starting Price from a bookmaker means that you don’t
know exactly what the odds will be when you place your bet.