NYTimes restricts archives

Not too long ago, the Times Archive was free out to 30 days for registered users. Now the free period is 7 days. On the other hand the price for access to an article seems of have fallen. Unfortunatly, I too frequently want to go back into the deeper history of a story and that was often within the 7-30 days window which I seem to have lost free access too. More evidence that more often change is unwelcome than its reverse?