Base subscription
Check whether the published price is per business, per location, per staff calendar, or per user.
Payments and transaction fees
Some platforms earn money primarily through payment processing or require use of their payment system. Include those fees in the monthly comparison.
Messaging and communications
SMS reminders, marketing messages, email volume, phone numbers, and call minutes may be bundled or usage-based.
Marketplace and new-client charges
If a platform brings clients through a marketplace, understand whether there are commissions or one-time new-client fees.
AI receptionist usage
Voice AI is commonly usage-based because real telephone minutes have a direct underlying cost. Compare included minutes, overage rates, call limits, and what the AI can actually do.