For my herp vet, it's $40 for an office visit, and when my friends snake had an R.I., i believe that they gave her pre-measured baytril injections to give her every week, I think that ran about $60 if I remember correctly...It's been a couple years since then. Also, remember that the price is going to vary from Vet to Vet. You said that your BP is showing other signs. What other signs is it showing exactly? and is your BP going in blue? Check the mouth, and if there is no mucus and there's only a whistle every 10 minutes like you said, I personally would wait until your BP sheds before taking it into the vet. if your temps and humidity are what they are supposed to be, then chances are if it is an RI, waiting a few days for your girl to shed isn't going to make the RI progress any faster.