I know pricing discussions generate a lot of heat, but honestly, $30 is not a lot of money. Nor does it magically become a lot of money after you have 500 customers, at which point you have very high-class problems.
Here, let me extend that graph with one extra line:
http://images1.bingocardcreator.com/blog-images/hn/spreedly-...
This subject seems tailor-made to solicit opinions from pathological customers who are not likely to be either good customers for Spreedly or successful at selling many accounts, totally regardless of whether Spreedly costs $5, $50, or $500 a month.