I think this is an excellent way to acquire paying customers AND will give many potential users the option to see if they can build a decent subscribership without having to front the $250 or more that would be needed for ListBuilder.
Thanks for making [Ezine Director] available at such affordable rates.
An associate of mine recommended you to me and from the moment I pulled up your home page, I was impressed. Your pricing plan takes start ups like me into account. Further, you have been highly responsive and helpful whenever I have contacted you with questions or concerns. I can confidently promise that I will be a customer of [Ezine Director] for ...