Their paying version is actually quite acceptably priced really, so if I was a reader, I'd probably already be paying...
What irritates me is all the others who think they all deserve £9.99 a month. Everyone wants £9.99 a month, even for services/sites you might use twice a month or less.
The sooner they realize it's not acceptable for users to have 5 or 8 of these going, and they need to readjust their prices, the better they will be...