Depends on your market. Not everyone can get $5.70 basic POTS. In my area it's $10+taxes and fees for a total of about $18.
But you can get away with metered service with DSL. With dialup I'd be paying $18 for unlimited local plus taxes. But even then, POTS plus cheap dial up is less than 1/2 the price of Verizon's cheapest DSL.
In Michigan, the cheapest is around $24:
Monthly Service - Jun 10 thru Jul 9 Call Plan 50 13.93 Zone Service 1.69 Federal Access Charge 5.37 Total Monthly Service 20.99
Local Calls Call Plan 50 2 Call(s) were placed this month 50 Call(s) were allowed
Surcharges and Other Fees 9-1-1 Emergency System Billed for Ottawa .22 Federal Universal Service Fee .60 Total Surcharges and Other Fees .82
Taxes Federal at 3% .65 State at 6% 1.31 Total Taxes 1.96
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