You don't pay for a £200 a month account to respond to your emails, and if you are, I would tell you that you're wasting your money.

I don't know, I guess it depends from a) how many hours per month you spend answering emails, and b) how much more revenue you could get in that same time. $200 should be reasonably 2/3 hours of work? So that's about the amount of saved time per month to break even on your subscription. It's a steal.