Ah ok so it is like that.

By 10% better than tote I assume you mean say the horse is $4.00, you offer $4.40? If it were 10% better expressed as their ACTUAL percentage, then 10% more than $4.00 (which is 25%) would be $6.50 (which is 15%). Couldn't do that, b/c the odds offered would be too long. Like if a horse was $9.00 (11%) you'd have to offer 100/1 (1%).