Launch cost

What the SKU has to land before the first dollar.

A small studio underwriter for the pre-launch cash outlay on a single SKU. Feed it COGS, the Amazon FBA inbound per unit, the TikTok Shop FBT commission, the target AOV, the target ROAS, and the daily-revenue grind. The calculator sizes the working capital the line actually needs — not the figure that looks good on a Notion page.

Math runs client-side. Move any input and the four outputs update live. No fetch, no DB — a single formula module under src/lib/business.

Assumptions in use

  • Daily revenue goal
    Hero grind target
    $500
  • FBA inbound / unit
    Amazon inbound to FC
    $2.50
  • FBT commission
    Default TikTok Shop cut
    8%
  • 30-day window
    Steady-state, no ramp
    30 days

Inputs

Spec the SKU.
Tap a number to nudge the math. Outputs on the right recompute live — no submit step, no fetch.
USD

Per-unit landed cost (ex. inbound & fees).

USD

Amazon inbound ship to the FC. Default $2.50.

%

TikTok Shop FBT category cut. Default 8%.

USD

TikTok Shop average order value.

×

Revenue per $1 of ad spend.

USD/day

The grind target — defaults to $500.

Live output

$500.00 / day
What the launch has to clear
Four projections from one input set. The margin guardrail reads the FBA + FBT cut as a % of AOV — tight or loose, the line lives or dies here.

Per-unit cutoff

Unit break-even ad spend

$14.94
Max bid per sale after COGS, FBA inbound, and FBT commission.

A bid above this loses money on the unit; a bid below this returns contribution for the next dollar.

30-day floor

Monthly break-even units sold

469
≈ 16 / day at $32.00 AOV.

30 × the daily unit count at the projected AOV. Steady-state; the day-1 grind held for the whole month.

Pre-launch outlay

Inventory + 30-day CPM pad

$14297
$6797 COGS + inbound · $7500 ad spend.

One-time outflow: 30 days of inventory at COGS + FBA inbound, plus the CPM pad the cpm-pad page sizes separately. Read as a single floor for working capital.

Margin guardrail

15.8% of AOV

Fee + FBT sit at 15.8% of $32.00 AOV

Fee + FBT sit comfortably inside the friendly band — AOV clears spend at any ROAS in band.

Continue the math

Round-trip the studio

The launch-cost inputs feed the cpm-pad and fee-math pages. Run them side by side before you spec the SKU.

Round-trip the CPM pad →See the fee schedule →