I proposed an idea to speak at Black Hat in Las Vegas, so I travelled internationally to speak. The event asked me to buy a ticket at full price, and I was paid 1000 USD to speak. My travel and accommodation was fully covered by the event. My employer did not pay my travel expenses, and I used my PTO to speak. It took me 10 days to prepare for my 50 minutes speaking slot, and I had a mostly good time. I'm a wookie who has been speaking for 6 years. This was a for profit event.