TikTok Shop margin math - when the channel is growth, when it’s a trap

TikTok Shop is worth pursuing when products are demonstrable, impulse-friendly, and carry enough gross margin to absorb referral fees, creator commissions, fulfillment, returns, and paid amplification - then still leave contribution. Brands with thin margins or slow creative ops often burn cash while the dashboard looks busy. Propeller treats TikTok Shop as an operations and margin problem first, a content problem second.

Stack the real costs

Build a one-SKU P&L: landed COGS, platform referral, affiliate / creator take, ads or GMV Max, fulfillment, and expected returns. Ignore vanity GMV. If contribution is near zero before overhead, the channel is a marketing tax - unless Shopify DTC lift and list growth clearly repay it. Catalog sync from Shopify is table stakes; inventory truth across channels is the ops risk that destroys seller ratings.

Fit checklist before build

Category allowed? Creative capacity for ongoing demo content? Affiliate plan that doesn’t vaporize margin? Landing and PDP parity so Shop traffic can graduate to owned channels? If any answer is no, pause. A TikTok Shop agency should talk economics before Spark Ads.