They are available on banggood as well for $10.50, which is still half price.
The CE/FCC certificate is really a joke. CE is more of a promise to play by certain rules, but any vendor can claim to be CE compliant. FCC might be more stringent, but there have been reports that even the power supply of the Nextion Intelligent series interferes with radio signals… so take it with a grain of salt. If you want to use one of the displays in a commercial product, you have to re-certify anyway.
The Editor is not officially available in English… but prices are a good motivator.