San Junipero

This episode in the series Black Mirror, a young girl goes into a bar in a city called San Junipero. She meets another girl and they begin to fall in love. As the story progresses, they fall in love and you learn that this city is actually just a computer program that elderly people can go into before and after they die. Yorkie and her lover both end up in San Junipero after they die and live out the rest of eternity to be together. I thought as a show all together it was pretty good but it sparked many questions that were left unanswered. Are there multiple cities like this to stop it from getting to crowded or is it just one place everyone goes? Also, how big is this city? Finally, what would it cost to enter this false reality? This is a good idea for those who do not believe in an afterlife. I feel as though this is something that could benefit many older people who are beginning to become sick so they can relive or remember things from their past.