Press report · phonescoop.com · May 14, 2018: Basic (100 GB, monthly) $1.99 (first record).
Google One United States · source breakdown
Original sources behind every recorded price for Google One in United States.
Press report · phonescoop.com · May 14, 2018: Standard (200 GB, monthly) $2.99 (first record).
Press report · phonescoop.com · May 14, 2018: Premium (2 TB, monthly) $9.99 (first record).