I proposed an idea to speak at JSConfEU in Berlin, so I travelled internationally to speak. The event gave me a free ticket, and I was not paid to speak. My travel and accommodation was fully covered by the event. It took me 4 weeks to prepare for my 25 minutes speaking slot, and I had a great time. I'm a person who has been speaking for 4 years. Also, The conference organizers were incredibly professional, and kind.