Starfall is explicitly designed for mass production (like Starlink satellites), so unit costs drop sharply with volume. It is tiny compared to a Starship upper stage (~2.1 t dry mass vs. ~85–100 t), with far simpler systems (no main propulsion, parachute landing, jettisonable shield).

Here is a realistic BOM (Bill of Materials) breakdown and cost estimate at mature high-volume production (drawing analogies to Starship heat shield costs, Falcon 9 fairing recovery hardware, and general aerospace component pricing). All figures are rough order-of-magnitude estimates in USD.

1. Primary Structure (~$30k–$90k)
Aluminum top plate (~1,400 kg, fabricated structure + partial TPS wrap) $10k–$30k (aluminum is cheap at scale).
Carbon-fiber heat shield base (~700 kg structure + N₂ tanks) $20k–$60k (composites drop in cost with volume production).

2. Heat Shield / TPS (~$20k–$100k if using Starship tiles)

160–240 Starship-style hexagonal ceramic tiles.
Scaled from Starship material estimates (~$1,300–$3,800/m² for similar ceramics). For the tiny area it is $15k–$60k raw, plus attachment hardware/pins/secondary layers.
At high volume (thousands of Starfall units), per-tile cost would be much lower than early Starship production → total $20k–$100k.
(Current non-tile TPS on carbon base would likely be cheaper, perhaps $10k–$50k equivalent.)

3. Steerable Parachute Recovery System (~$50k–$150k)

Directly analogous to Falcon 9 fairing recovery (steerable parafoil + pilot/drogue chutes, actuators, rigging).
A full Falcon fairing set costs ~$6M to build (mostly the large composite structure itself). The recovery hardware (parachutes + steering) is a small fraction.
Starfall’s smaller system (drogue + pilot + main steerable parachute) benefits from proven tech but smaller size → $50k–$150k per unit.
Parachutes are reusable across multiple flights in theory.

4. Cold Gas Thrusters (Nitrogen) (~$10k–$40k)
Attitude control system with N₂ bottles (housed in heat shield), valves, plumbing, and multiple thrusters.
Same proven, simple, low-cost technology used on Falcon fairings, Starlink satellites, and early Starship tests.
Very inexpensive per unit at SpaceX scale (tanks + thrusters are commodity aerospace hardware) → $10k–$40k total.

5. Avionics, Power, Sensors & Recovery Aids (~$20k–$80k)
Guidance/navigation/control computers, batteries, antennas, beacons, sensors, payload interface.
Similar to Starlink or small satellite systems → low cost in volume.

Total Estimated Cost per Starfall Unit (Mature Mass Production)

Optimistic/high-volume is $150,000 – $400,000.
Conservative/initial production is $500,000 – $1.5M+ (development amortization, lower volumes, testing overhead).

It will be reusable.