Budget tier: $99-$200
The Cold Pod ($99) and similar inflatable/portable tubs sit here. The upfront cost is minimal. The ongoing cost is ice.
At 3 sessions per week with $5 in ice per session: $60/month, $720/year. Add the $99 tub and your first-year total is $819. Factor in replacing the tub annually (PVC doesn't last forever): ~$920/year ongoing.
If you use reusable ice molds and have freezer space, ice costs drop to nearly zero (just electricity for your freezer, roughly $5-10/month). First-year total with molds: ~$200. That's the cheapest sustainable cold plunge setup possible.
Mid-range tier: $1,199-$2,499
The Ice Barrel ($1,199), Canuck Cold ($1,599), Therafrost Pro ($1,899), and Arctic Warriors ($2,499) live here. This is where the cost dynamics shift.
The Ice Barrel and Canuck Cold require ice but are durable enough to last 5+ years: $1,199-$1,599 upfront, ~$240-720/year in ice (depending on whether you buy or make ice). Five-year total: $2,400-$5,200.
The Therafrost and Arctic Warriors include chillers: $1,899-$2,499 upfront, ~$300/year in electricity, $50-100/year in filters and water treatment. Five-year total: $3,650-$4,500. The chiller models become cheaper than ice models by year 2-3.
Premium tier: $4,990+
The Plunge All-In ($4,990) and comparable premium tubs. High upfront, low ongoing. Electricity runs $20-40/month, water treatment with ozone is minimal. Annual ongoing cost: $300-500.
Five-year total: ~$6,200-$7,500. That's roughly $100-125/month amortized. For context, a single cryotherapy session costs $40-75, and a gym with cold plunge access costs $100-200/month. If you'd otherwise pay for these services, the premium tub is competitive.
Hidden costs people forget
Electrical installation: If you need a dedicated outdoor GFCI outlet, budget $150-300 for an electrician.
Concrete pad: Placing a heavy tub on grass leads to sinking. A small concrete pad costs $200-500.
Water: If you change water weekly, that's 400-600 gallons per month. At average US water rates ($0.005/gallon), that's under $3/month. Basically negligible.
Water treatment: Hydrogen peroxide ($3/month), bromine ($8-10/month), or replacement filters ($20-40 every 1-3 months depending on model).
Cost per plunge
This is the metric that matters. Assuming 3 plunges per week (156/year):
Cold Pod + store-bought ice: $5.25/plunge in year 1, $4.60 ongoing.
Ice Barrel + homemade ice: $8.08/plunge in year 1, $0.40 ongoing.
Arctic Warriors (chiller): $17.30/plunge in year 1, $2.60 ongoing.
Plunge All-In: $33.97/plunge in year 1, $2.90 ongoing.
Every option converges to $1-4 per plunge by year 2+. The upfront cost is the variable, and ongoing costs are low across the board.