The Washington State Open tennis tournament started at the Seattle Tennis Club today— for the week, and I went out today to go and take a look. The facility is not even 2 miles from my house, but I have never been there. All other times of the year it is members only and very exclusive.
It was $30,000 to join the Club in 2015 (a figure almost certainly higher by now), plus annual dues. The wait list time is said to be 8 years or so. Rumor has it that Bill Gates wanted to become a member, but now has to wait his turn, as well.