Absolutely nothing, except that it would be pretty silly to pick a $2 chance as your longshot, seeing as you're only having $5 EW on it. Won't make a lot of money out of that!!! Personally, I think your best each way bet should preferably be at least $4 for the win and your best longshot bet should preferably be at least $8 for the win, but there's no rules regarding price. And as we all know, there are times when we think a horse is going to be a roughie on Friday and come Saturday, it starts favourite!!!