Teespring

Teespring is a creator marketplace rather than a pure B2B supplier: artists, designers, and small brands upload phone case designs and Teespring handles production, fulfillment, and shipping on their behalf. The platform's strength is community discovery, your designs get shelf space alongside other creators, which can drive organic traffic you wouldn't get on your own site.

The royalty model favors creators: you keep a meaningful cut of each sale rather than paying upfront per unit or per design. This model works well if you're testing designs without committing to inventory, or if you're building a personal brand around your case designs. The tradeoff is that Teespring takes a commission, so your margins are lower than sourcing direct from a factory, but the zero-minimum and built-in audience make it attractive for designers without an existing customer base.