Build the estimate
The pricing page lists $9.99 monthly for a base number lease and $69.99 monthly for iMessage capability. That makes $79.98 before possible setup and use-case surcharges. The separate $19.99 subscription covers SMS, MMS and email, so it should not be quoted as the iMessage package.
Build the contract
Ask which number types can use the capability, how provisioning works and what inbound events your application receives. A provider offering several channels can still have different behavior and eligibility rules for each. Confirm the selected combination in the quote.
Build for observed outcomes
Keep acceptance, delivery, replies and errors distinguishable in your application. Request the provider’s event documentation and test a supported failure case before launch. Marketing claims about readiness and delivery are not substitutes for those observations. This review evaluates the pricing and product scope, not a benchmark of the service.