Private space travel company Blue Origin expects its first test flights with people in 2017. The announcement was made by Company founder Jeff Bezos, the man who founded Amazon.com. He is spending some of the billions earned from the Seattle-based online retailer on high tech equipment and about 600 employees working in a former Boeing airplane parts facility. Bezos said he’s convinced the company—a vision of his childhood dreams_will eventually be profitable.

The company isn’t taking deposits yet, so it’s unclear whether thousands of interested space travelers will translate into sales. Blue Origin, founded in 2000, has launched a ship twice, and it landed safely. The company plans to keep testing until its usefulness is done then switch to other ships being built to test human flight.

The real money will be made selling rocket engines to others planning to launch satellites and spaceships, Bezos said. United Launch Alliance has asked Blue Origin to build the engine for its new launch vehicle so it can stop relying on Russian-made engines. Bezos, who still has his day job at Amazon, said he’s deeply involved at Blue Origin and spends time in the Kent facility, about 17 miles south of Seattle.

Blue Origin is expecting to create six New Shepard vehicles designed for self-flying six persons to over 62 miles above Earth, which can offer the weightlessness experience for a couple of minutes and a view of the planet against space. According to Bezos, he has already invested over $500 million in the company he launched in 2000.