Buying the stuff from the drug manufacturers is crazy expensive. Over $1000 a month. Going through a compounding phramacy is much cheaper, I pay around $249/month for my script.
You can go even cheaper and buy the peptide yourself from places like peptide sciences and compound it yourself, less than $100 for a 3 months supply, but you increase your risk profile pretty significantly going that route. My partner is a pharmacist and that type of mixing (assuming you do everything correctly) is considered acceptable for "immediate emergency use", not mix up and use for a month or three and keep it in the fridge in the meantime. It's a small risk to be sure, but non-sterile compounding at home is riskier than having a compounding pharmacy do it the right way.
You can go even cheaper and buy the peptide yourself from places like peptide sciences and compound it yourself, less than $100 for a 3 months supply, but you increase your risk profile pretty significantly going that route. My partner is a pharmacist and that type of mixing (assuming you do everything correctly) is considered acceptable for "immediate emergency use", not mix up and use for a month or three and keep it in the fridge in the meantime. It's a small risk to be sure, but non-sterile compounding at home is riskier than having a compounding pharmacy do it the right way.