Budget tier: $99-$650
Portable and inflatable tubs sit here: the Cold Pod ($99) and the Canuck Portable ($650). 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 an inflatable tub every few years (PVC doesn't last forever) and the budget path stays cheap upfront but never stops costing you in ice.
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: $2,300-$3,150
This is where the cost dynamics shift, and where you choose between paying for ice forever or paying once for a chiller. Two paths sit in this band.
Durable ice tubs: the Canuck Red Cedar Barrel ($2,900), Carbonized Pine ($3,100), and Acrylic Tub ($3,150) are built to last 5+ years, but they still need ice. Upfront $2,900-$3,150, plus ~$240-720/year in ice depending on whether you buy or make it. Five-year total: roughly $4,100-$6,750.
Standalone chillers: a Canuck chiller (0.8 HP or 1 HP from $2,300, the 1.5 HP Elite at $2,550) added to a tub you already own kills the ice cost entirely. Upfront $2,300-$2,550, then ~$15-50/month in electricity plus $50-100/year in filters and water treatment. A chiller pays for itself against store-bought ice within about two years of regular use.
All-in-one chiller setups: $2,900-$5,050
If you want the tub and the chiller in a single purchase, this band covers it. The Canuck Portable Bundle ($2,900) is the cheapest all-in-one, pairing the drop-stitch tub with the Pro 1 HP chiller. The Canuck cedar, wood, and acrylic bundles run $4,350-$5,050. Sun Home's Cold Plunge Vertical ($3,799) and Horizontal ($3,999) sit here too, with their own smart chiller path.
Upfront $2,900-$5,050, then ~$15-50/month in electricity and minimal water treatment with ozone. No ice, ever. Five-year total: roughly $3,800-$8,000. For a daily user, the all-in-one is usually cheaper over five years than the ice-based budget path, despite the higher sticker.
Premium tier: $7,990+
The Plunge All-In ($7,990) and comparable hard-shell tubs. High upfront, low ongoing. Electricity runs $20-40/month, water treatment with ozone is minimal. Annual ongoing cost: $300-500. Commercial-grade units like the Sun Home Pro Apex ($14,999) and Pro Commercial ($16,299) sit above this for multi-user settings.
Five-year total on the Plunge: roughly $9,500-$10,500, about $160-175/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 those services, the premium tub is competitive over time.
Hidden costs people forget
Electrical installation: If you need a dedicated outdoor GFCI outlet, budget $150-300 for an electrician. Most chiller tubs run on a standard 120V GFCI outlet, so check before you assume a 240V job.
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). Chiller tubs with built-in ozone cut this to almost nothing.
Cost per plunge
This is the metric that matters. Assuming 3 plunges per week (156/year):
Cold Pod ($99) plus store-bought ice: $5.25/plunge in year 1, $4.60 ongoing. With homemade ice, closer to $1/plunge ongoing.
Canuck Portable Bundle ($2,900, chiller): $20.51/plunge in year 1, $1.90 ongoing. No ice.
Plunge All-In ($7,990): $53.53/plunge in year 1, $2.30 ongoing.
Every chiller option converges to $2-3 per plunge by year 2 and beyond. The upfront cost is the variable; ongoing costs are low across the board once you stop buying ice. That is the real lesson of the numbers: for a daily user, ice is the expensive part, not the tub.