Price and location are the two factors most brands optimise for when selecting a 3PL. Both are real factors. Neither is the primary determinant of whether the relationship will work.
Key points
- Onboarding discipline is the first structural test - weak providers skip receiving verification, then blame your data when discrepancies appear
- Error measurement transparency separates competent providers from dangerous ones - request 30 days of accuracy data before signing
- Responsiveness architecture matters more than account manager friendliness - test by sending an inquiry outside business hours
- Capacity elasticity under spikes is non-negotiable - ask how they handled their last 3x volume day with specifics
The five evaluation lenses
Onboarding discipline is the first structural lens. A disciplined onboarding process includes physical receiving verification, bin location logic design, and pick-path optimisation before any order flows. Weak providers assume your inventory data is accurate and your SKU logic is sound. At 50 orders per day, a 2% inventory discrepancy means one order daily ships incorrectly - 30 damaged customer relationships per month.
Inventory accuracy systems reveal operational maturity. Ask how often they cycle-count. Weekly cycle counts of high-velocity SKUs are the minimum standard at this volume. Ask how they handle variance - a provider that adjusts inventory without investigating root cause is building technical debt. In Australian ecommerce, supplier shipments contain errors in 3% to 5% of cases. A provider that does not verify inbound stock passes those errors to your customers.
Error measurement and transparency separate competent providers from dangerous ones. Request error rate reporting before you sign. A provider that quotes 99.5% accuracy without documentation is guessing. Disciplined operations track errors by type: mispick, wrong quantity, damaged in pack, mislabel.
Structural evaluation criteria that price sheets won't revealA provider saving $0.50/pick but delivering 5% errors destroys more value than it saves
Communication and capacity
Communication and escalation pathways determine how quickly problems get solved. Test this during evaluation. Send an inquiry outside business hours. Measure response time. Ask who handles urgent issues on weekends. Weak providers route everything through ticketing systems with 48-hour SLAs. Disciplined providers give you a direct line to warehouse supervisors.
Capacity elasticity under volume spikes is the final structural lens. Your order volume is not flat. It spikes during promotions, product launches, and seasonal peaks. Ask for specific examples of surge handling. A provider that cannot describe their surge protocol has not built one. Disciplined operations maintain buffer capacity in staffing and floor space, with cross-trained packers who can shift between roles.
The decision framework
You are not selecting a vendor based on cost. You are selecting a system that will contain operational risk during your most fragile growth phase. The provider that prevents one catastrophic week pays for years of higher per-order fees.
For discovery calls, ask about onboarding, inventory, errors, communication, and elasticity - and do not accept vague answers. A provider that cannot give specific procedures and specific data is not operationally disciplined.
Questions to ask
- Can they show 30 days of pick accuracy data broken down by error type?
- Who is your direct contact at 6pm on a Friday?
- Walk me through your receiving process for new clients
- How do you handle a 3x volume day? Describe your last one
- What happens when variance is found in a cycle count?
Want to see how this would run for your brand?
Walk through the warehouse, the dashboard and your order profile with the team that runs it.
