There are three ways to get a regular sauna session into your life: build one, visit one, or unroll one. All three end in the same place — you, sweating, thirty minutes of heat. The economics, though, are three different worlds. Here's the honest math, including the cases where a blanket is not the right answer.
Option 1: The sauna room
A quality infrared sauna cabin runs roughly $2,000–$8,000, with custom builds and traditional rooms climbing to $30,000. Add delivery, sometimes an electrician for a dedicated circuit, and — the cost nobody prices in — a permanent claim on 15–30 square feet of your home. Per-session electricity for a multi-kilowatt heater lands around $1–2.
What you get for it is real: room to sit upright, sessions you can share, and a permanence that becomes part of the house. If you own your home, use it several times a week for years, and have the space, a room is a defensible buy. That's not most people's situation.
Option 2: The studio habit
Drop-in sauna or contrast-therapy sessions run $30–$40 in most cities; monthly memberships land between $100 and $250. The first year of a twice-a-week studio habit costs roughly $3,000 — sauna-room money, except at the end of the year you own nothing. Add the drive, the schedule, and sharing your quiet half hour with whoever booked the slot next to you.
Studios shine for the occasional treat and for the social version of the ritual. As infrastructure for a routine, the math punishes you every single week.
Option 3: The sauna blanket
A Solfold is $399, once. It runs on a standard outlet — a 600-watt element for a 30–45 minute session works out to about a dime of electricity. It stores under a bed and travels in a tote bag, so the "floor space" line item is zero.
Against the studio habit, the break-even is about 13 visits — six or seven weeks of a twice-a-week routine. Everything after that is heat you already paid for. Against the sauna room, you're at roughly a tenth of the entry price for the same category of far-infrared warmth, traded against sitting up, sharing, and prestige.
The honest scorecard
Upfront: room $2,000–$8,000+ · studio $0 · blanket $399.
Per session: room ~$1–2 · studio $30–40 · blanket ~$0.10.
Space: room 15–30 sq ft, forever · studio none · blanket under the bed.
One year, twice a week: room ≈ purchase price + ~$150 power · studio ≈ $3,000 · blanket ≈ $410 all-in.
Where the blanket loses
Credibility requires saying it: if you want to sit upright, session with a partner, or you simply love the wood-and-steam theater of a real sauna room — a blanket won't replace that. It replaces the bill and the footprint, not the architecture.
The bottom line
If the goal is a consistent personal heat ritual at the lowest cost per session, the blanket wins the spreadsheet and it isn't close: $399 once, a dime a session, zero square feet. Ours comes with a 30-day sweat-it-out guarantee, and right now the first 50 pre-orders include our $149 LED Face Mask free, shipping by September 19.
New to the category? Start with how a first session actually works, and if safety is your first question, read our EMF guide — we're the brand that hands out its lab report.