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 the time you spent with me on the telephone about your site...I think you have a potentially great success story here.
...the SMOOTHNESS and efficiency of your site, plus your rates and EASY training are THE BEST we saw.