If Google cloud ain’t your jam then checkout browserless (https://browserless.io/). It can be considerably cheaper under certain situations, and we’ve been up and running for almost a year. Happy to answer questions if anyone has any.

EDIT: We’ve got stuff on GH: https://github.com/joelgriffith/browserless, and startup is under 100ms most of the time. Fonts and other things “just work” as well, plus there’s a slew of REST APIs for common stuff as well. Selenium webdriver support landing soon!