Should I buy Ooma, home phone service?

Hello, I am planning to buy 1 Ooma. Ooma provides free home phone service once you purchase our device for a one-time fee. Plug your high-speed Internet and existing home phone into Ooma and call anywhere in the U.S. for free. You'll enjoy clear, landline quality voice and features like caller-ID,... show more Hello,
I am planning to buy 1 Ooma.
Ooma provides free home phone service once you purchase our device for a one-time fee. Plug your high-speed Internet and existing home phone into Ooma and call anywhere in the U.S. for free. You'll enjoy clear, landline quality voice and features like caller-ID, call-waiting, voicemail, and more. You pay only applicable taxes and fees — approximately $3.50 per month.
Shoul I buy Ooma?
Thank you very much.
Happy holidays.
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