To maintain uninterrupted service, subscription(s) are automatically renewed on a quarterly basis at the current rate of $100. The initial trial subscription charge of $75 covers the first quarter. The next charge will appear on your submitted credit card, on or around the 20th of second month, for the next quarter beginning on the first day of the third month. The original invoice is the only invoice you will receive. Your credit card statement is your receipt for any additional quarterly renewal charges and proof of service. Pring Research guarantees a minimum of 48 issues per year of the weekly, and 12 of the monthly.