Lock the specification sheet first
Before comparing prices, define the exact specification: motor type, vibration frequency, modes, battery life, waterproofing and charging standard. A written spec sheet keeps suppliers quoting like-for-like and prevents cost-cutting on hidden components.
Understand the cost drivers
The motor, battery and case account for most of the unit cost. A brushless motor and a travel case raise cost but also raise the defensible retail price — usually by more than the added cost.
Ask about MOQ and customization
Typical MOQs for branded sonic toothbrushes start in the hundreds, with private-label and custom packaging available at higher volumes. Clarify what counts toward MOQ — handle only, or handle plus heads.
Verify charging and battery claims
Battery-life figures are usually quoted on a specific usage assumption (e.g., 90 seconds per day). Ask for the test condition behind the claim and, ideally, a sample to validate in real use.
Plan packaging and compliance
Retail packaging, user manuals and any destination-market labeling should be confirmed before production. Confirm the certifications your market requires before committing to a bulk order.
Run a small first order
Start with a pilot order to validate quality, packaging and shipping before scaling. A small first run is cheaper than a full container of a product that underperforms.