G2 reviewers broadly rate Palo Alto Networks VM-Series Virtual Firewall at 4.0 to 5.0 stars, signaling strong satisfaction with its security capabilities despite near-universal cost complaints. Reviewers across enterprise, mid-market, and small business segments consistently flag licensing and subscription costs as the primary drawback, with several noting that mandatory add-on subscriptions for advanced features compound the expense. G2 users comparing alternatives mention Fortinet and Cisco as lower-cost options. However, high-rating reviewers justify Palo Alto Networks VM-Series Virtual Firewall's pricing through its enterprise-grade threat prevention, App-ID, WildFire, and consistent hybrid cloud policy enforcement, making it strong value for security-mature organizations but a difficult investment for budget-constrained smaller teams.