It is not obvious to me that A/B testing is overpriced at $50 a month or that there is business value in attempting to compete on price when the product that practically defines the category is already free.
I really can't beat this drum enough guys: do A/B testing. If you do it right, it has the potential to really move the needle. It is an exceptionally bad place to go pinching pennies: if you have ~100 visitors a day already, the business value you will get just in a few goes at plucking the low-hanging fruit will dwarf any of the above numbers. (If you don't have 100 visitors a day already, I commend you for your dedication to A/B testing and respectfully recommend you focus more on SEO for the next month and come back later.)
