To be fair, $19/month only means that the cost of acquiring a new customer must ... | Hacker News

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		tnorthcutt on June 29, 2010 \| parent \| context \| favorite \| on: Show HN: Mocksup, my mockup prototyping & review w... To be fair, $19/month only means that the cost of acquiring a new customer must on average be less than the current value of $19/month multiplied by the average time a customer remains a customer (at that price point). Obviously that can't be known on the front end, of course. Any thoughts on what a reasonable customer acquisition cost is for a service like this?

michael_dorfman on June 29, 2010 [–]

Well, you definitely want to make sure your LTV is at least 3x your CAC, according to this post:

http://www.startuplifeblog.com/tag/ltv/

But personally, I try to keep my CAC below 15% of my LTV.

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