Liz Buchanan BVSc MRCVS
Hello! I'm afraid I don't know at the moment as I don't get involved in the business side. A veterinary wholesaler may be able to help you better. Also because injections are not always charged in that way; often the most expensive part of a sedative is the staff time (supervision or monitoring), which may vary according to the route by which they are given (a subcutaneous injection being much less skilled than an IV and requiring fewer staff); everyone follows a different pricing structure. Butorphanol is a Schedule 4 drug, so has additional storage requirements. I hope that something there is helpful.