Litmus copyright says founded 2005, they moved the business from London, UK to Cambridge, MA, USA in 2009. I went back to screenshots from 2010 and even then they already used USD https://web.archive.org/web/20101002224250/https://www.litmu...

So we're talking about a tip from about 15 years.

> as Paul discovered when he stopped pricing exclusively in Euros (€)

Why would a UK company charge in Euro?

Is there a secondary source for the quote?

> Paul’s 500% increase in revenue is definitely above average

4-5x in conversation, that's not necessarily the same as revenue

> However, as Paul discovered when he stopped pricing exclusively in Euros (€) and started pricing North American customers in USD ($), even this very simple change can be incredibly profitable.

In his case it was a lot more than 46%