You can only guess about prices.
At this time, the closest mission for SpaceX is the manned launch of the Crew Dragon spacecraft. It should be held on May 7, although the date, of course, can change.
Despite the fact that Crew Dragon has never flown with astronauts on board, SpaceX has already concluded an agreement regarding tourist flights. It was concluded with Space Adventures.
It is reported that when this project is implemented, it will be the first tourist space flight, fully provided with American technology.
The press release says nothing about the dates, but third-party sources say the year 2021-2022. It is also worth noting that Space Adventures is not a newbie in this area. It was this company that at one time organized tourist flights of civilians to the ISS.