Dollars-per-session math for a home sauna or cold plunge: amortize the gear over the sessions you actually take, add the electricity line, find the visit count where it beats paying per visit. R port of the sauna-vs-gym-cost calculator. The protocol-cost method comes from HackedSelf.
sauna_cost(2500, 4, 2.0, 0.17, 22, months = 36)
# $sessions_in_window 626 $utility_per_session 0.34
# $amortized_per_session 4.34 $breakeven_visits 115
install.packages("saunacost", repos = c(
"https://scrapertweeter3-prog.r-universe.dev",
"https://cloud.r-project.org"))
Home Sauna Cost Per Session: benchmark math from the Poket Dev research desk.