There are three different options of Rock Hard Formula available to purchase. Buy One bottle of Rock Hard Formula - (One-month supply): One-time purchase for $97 and Subscribe and save option for $77 per month, Buy three bottles of Rock Hard Formula - (Three month supply): One-time purchase for $273 and Subscribe and save option for $197 per quarter, Buy 6 bottles of Rock Hard Formula (6 months supply) for $397. All these packages include free shipping.