What Is a 3PL and When Should You Use One?
A practical breakdown of third-party logistics — what a 3PL does, what it costs, and the exact order volume where outsourcing beats self-fulfillment.
If you're shipping more than 50 orders a month and still doing it yourself, you've probably asked: should I be outsourcing this?
This guide answers that question with math, not marketing.
What a 3PL Actually Does
A third-party logistics provider (3PL) stores your inventory in their warehouse and handles the pick, pack, and ship process for every order. You send them your product in bulk. When a customer orders, they fulfill it.
The core services a 3PL provides:
- Receiving — unloading and checking in inbound inventory
- Storage — shelving or binning your SKUs in their facility
- Pick & Pack — pulling items per order and packing them
- Shipping — handing off to carriers (UPS, FedEx, USPS, etc.)
- Returns — receiving and processing returned orders
Some 3PLs — like Pro Fulfill — also handle freight forwarding, FBA prep, and customs brokerage if you're importing goods.
The Real Cost Breakdown
3PL pricing typically has four components:
| Fee Type | What It Covers | Typical Range |
|---|---|---|
| Receiving | Per pallet or per unit checked in | $5–$25/pallet |
| Storage | Per pallet or cubic foot per month | $15–$30/pallet/mo |
| Pick & Pack | Per order + per item | $2.50–$5.00/order |
| Shipping | Carrier rate (often discounted) | Varies |
For a DTC brand shipping 300 orders/month with 1.5 items/order, all-in costs typically land between $1,200–$2,000/month depending on package size and weight.
When Self-Fulfillment Stops Making Sense
The crossover point depends on your labor cost and how much time you're actually spending on fulfillment.
A simple formula:
Self-fulfillment cost = (hours/month × your hourly rate) + packaging + shipping
3PL cost = fulfillment fees + shipping (often discounted)
For most founders, self-fulfillment stops penciling out somewhere between 100–300 orders/month. Below that, the 3PL fees outweigh the time savings. Above it, you're trading cheap labor (yours) for expensive labor (still yours, just more of it).
The Hidden Costs of Doing It Yourself
Beyond raw labor, self-fulfillment carries costs most people don't account for:
- Opportunity cost — hours spent packing are hours not spent on growth
- Space — warehouse or garage space that could be used or rented
- Mistakes — wrong items, damaged goods, late shipments; these cost real money in refunds and re-ships
- Carrier rates — individual shippers pay retail rates; 3PLs pass through negotiated carrier discounts
What to Look for in a 3PL
Not all 3PLs are equal. The questions that matter most:
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Where are their warehouses? A single warehouse in one region means slow (and expensive) delivery to the other coast. Multi-node networks like Pro Fulfill's Pomona + Savannah + Edison footprint cover 70% of the US population within 1–2 days.
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What's their order accuracy rate? Industry standard is 99.5%. Ask for it in writing.
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Do they integrate with your platform? Shopify, WooCommerce, Amazon — your 3PL should pull orders automatically, not require manual uploads.
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What's the contract structure? Avoid long lock-ins until you've run a trial.
The Bottom Line
A 3PL isn't right for everyone. If you're shipping under 50 orders/month, you're probably better off self-fulfilling and reinvesting that capital into growth.
But once fulfillment starts consuming meaningful time — or once shipping costs become a real line item — a 3PL pays for itself quickly.
See what you'd save.
Plug in your order volume. See the savings in 30 seconds. No gate, no scheduling a call — the numbers speak for themselves.