Are you sure you bought Levemir without a prescription for $47.99? if so, you got a very good deal and the pharmacist sold it to you illegally! Levemir, as well as Lantus, Novolog, Humalog and Apidra all require prescriptions in the United States. You can buy NPH and Regular without a prescription and the price you paid seems more in line for one of those. NPH & Regular are the old school long (NPH) and fast (Regular) acting insulins, before the insulin analogs came out. It's also possible the pharmacist gave you a vial of Levemir thinking he was giving you NPH or Regular.