In the $2 per visitor terms that I stated at the beginning of this article, a free trial user now costs us $7.57 to attract, which is way better than the $40 per user from our first landing page!
How a few small landing page tweaks created five times the conversions
Miles Burke

Hi… I really liked that this was done very experimentally and logistically. Although, can someone please explain what the formula was used to arrive at $7.57? Thanks. I’d like to understand more.