How long does small batch and low-volume manufacturing take to manufacture and ship?

Confidence 4/5 Established practice

Lead time for small batch and low-volume manufacturing:

Small runs are dominated by set-up rather than production: usually the same 7–20 days of preparation as a large run, with fewer production days.

Low-volume manufacturing process selection — Industry practice; process crossover points are widely documented
De minimis thresholds and informal entry — US Customs and Border Protection

What goes wrong with small batch and low-volume manufacturing

Choosing a process because it is the one the factory has, rather than the one the volume suits.
Letting set-up cost hide inside the unit price, which makes the volume trade-off invisible.
Re-tooling at the crossover instead of planning the transition in advance.
Assuming a small order gets the same attention as a large one; it needs a factory for which it is not trivial.
Overlooking de minimis thresholds, which can change the entire landed cost for a small shipment.

Send the requirement and any drawings. You get a supplier shortlist and one landed price, with the cost breakdown shown.