Get inspired and learn to win on our blog | Cart.com

Pick and pack warehouse: How it works at Cart.com

Written by Tyler Lawson | Aug 15, 2025 2:39:41 PM


The complexity of managing inventory, processing orders and shipping products across multiple sales channels is overwhelming many growing brands. Pick and pack warehouse services offer a solution that can transform your fulfillment operations from a daily headache into a competitive advantage. 

This guide will walk you through everything you need to know about leveraging professional pick and pack services to scale your business efficiently.

Pick and pack warehouse: In-house vs 3PL

Service component In-house operations Standard 3PL Advanced 3PL (Cart.com)
Setup time 6-12 months 4-8 weeks 2-4 weeks average
Technology integration Custom build required Limited platforms 100+ ecommerce integrations
Average order accuracy 95-97% 98-99% 99.5%+
Shipping zones Limited by location Regional coverage Coast-to-coast network
Multichannel support Manual coordination Basic B2C Full omnichannel (D2C + Retail)
Peak season scaling Hire temporary staff Limited flex capacity Automated scaling infrastructure
Inventory visibility Daily/weekly reports 4x daily updates Real-time dashboard
Customer service Internal team Email support Dedicated account management
Return processing Manual handling Basic returns Automated reverse logistics
International shipping Complex setup Limited options Global carrier relationships
Compliance capabilities Limited Standard FDA, FTC, industry-specific

How pick and pack warehouse services work

Despite the nuances found in a pick and pack warehouse, the overall process remains remarkably similar throughout:

Using this process helps companies achieve significantly higher levels of efficiency than would otherwise be possible. These levels of efficiency, however, skyrocket when using a professional 3PL to manage your pick and pack services:

Pick & pack efficiency: In-house vs 3PL

Operational metric In-house average Professional 3PL
Order processing time 24-48 hours Same-day or next day
Picking accuracy 95-97% 99.5%+
Same-day shipping capability 30-50% 85-95%
Peak season capacity increase 20-30% 200-300%


Advanced providers like Cart.com offer real-time integration with over 100 platforms, ensuring orders flow seamlessly without manual intervention. This automation reduces processing time from hours to minutes while maintaining accuracy rates above 99.5%.

Understanding pick and pack pricing structures

Pick and pack warehouse costs vary significantly based on order volume, product characteristics and service level requirements. Most providers use a combination of storage fees, pick fees, pack fees and shipping costs to calculate total fulfillment expenses.

Average 3PL pick & pack/ storage fees by monthly order volume

Monthly order volume Pick & pack fee
(per order)
Storage fee
Per cu-ft Per bin
> 1,000 $2.00 – $3.75 $0.45 – $0.75 ~$4
1,000 – 5,000 $1.80 – $3.00 $0.45 – $0.55 ~$3.50
5,000 – 10,000 $1.50 – $2.50 $0.45 – $0.55 ~$3.00
10,000+ $1.50 – $2.00 $0.45 – $0.50 ~$2.50

 

In addition to these more standard fees, pick and pack warehouses often include hidden fees that may negatively impact your contract. The most common examples include:

Common hidden fees in 3PLs

Hidden fee Average fee amount
Setup and onboarding fees $500-$2,500
Account management fees $200-$500 monthly
Returns processing $2-$5 per return
Special handling for fragile items $1-$3 per order
Peak season surcharges 15-25% during Q4

 

How to optimize your picking and packing process

Creating a more efficient workflow for your picking and packing typically comes in one of two forms:

  • Selecting a 3PL to handle the work for you
  • Optimizing your own in-house picking and packing practices

Choosing the right 3PL requires evaluating capabilities that directly impact your customer experience and operational efficiency. Focus on technology integration, geographic coverage and service flexibility rather than just price.

Questions and answers for a pick and pack warehouse

Evaluation criteria Questions to ask Red flags
Technology Do you offer real-time inventory sync? Data updates only 2-4 times daily
Integration How many ecommerce platforms do you support? Fewer than 20 integrations
Scalability Can you handle 300% volume increases? No peak season experience
Accuracy What is your order accuracy rate? Below 99% accuracy
Shipping Do you have carrier relationships for discounted rates? No shipping cost savings
Support Do I get a dedicated account manager? Only email support available
Compliance Are you certified for my industry requirements? No relevant certifications

 

Our best advice here is to ensure your provider guarantees order accuracy rates, processing timeframes and system uptime. Leading providers offer 99.5% accuracy guarantees and same-day processing for orders received before cutoff times.

Business owners improving their in-house practices should consider the following:

  • Use of barcodes and scanners: Having electronic scanners placed throughout the warehouse will allow employees to easily check the details of a package without having to haul it clear across the floor, ensuring better accuracy without disrupting workflow.
  • Optimizing warehouse layout: Laying out the warehouse so that your fastest-moving inventory is kept close to the packing station (as shown in the image below) will help reduce delivery times and improve order accuracy.

  • Staff training: Your fulfillment is only as good as the employees handling it. Ensure that staff are up to date on best practices and know how to work with warehouse software as needed.
  • Improving your tech stack: Implementing software solutions for order management, warehouse management and transportation management allows you to keep core fulfillment processes under one roof, making them easier to manage and change, if necessary.
  • Investing in automation: Having systems in place to automatically pick and pack inventory creates a more accurate process, resulting in a positive customer experience.

Step-by-step transition to pick and pack warehouse services

Successfully transitioning to outsourced fulfillment requires careful planning and execution. Once you’ve narrowed down your options from 3-5 choices to your final selection, the average onboarding process takes 30-60 days, but proper preparation can reduce this timeline significantly.

Pick and pack implementation process

Implementation phase Key activities Success metrics
Week 1-2 Provider selection, contract negotiation After 3+ proposals received, final choice selected
Week 3-4 System integration, API testing 100% order sync accuracy
Week 5-6 Inventory transfer, staff training Zero inventory discrepancies
Week 7-8 Soft launch, performance monitoring 99%+ order accuracy


Note: Each and every client is different and custom timelines are provided during the original selection process. These time ranges are estimates and could vary depending on the complexity of the operation and the specific needs of each company.

Phase 1: Provider selection and contracting (Days 1-14)

Finalize your selection from your top 3-5 potential providers using the criteria outlined above. Request detailed proposals including pricing, SLAs and implementation timelines. Cart.com's 30-day average onboarding time reflects streamlined processes that minimize business disruption.

Negotiate contract terms that protect your interests, including performance guarantees, termination clauses and pricing escalation limits. Avoid providers requiring long-term commitments without proven performance.

Phase 2: System integration and testing (Days 15-30)

Work with your chosen provider to integrate systems and establish data flows. This includes connecting your ecommerce platform, configuring inventory sync and setting up order routing rules. Test the integration thoroughly with sample orders before going live.

Phase 3: Inventory transfer and go-live (Days 31-45)

Coordinate the physical transfer of inventory to the fulfillment center. Most providers offer inventory receiving services, but accurate counts and condition verification are critical. Plan for a soft launch with limited SKUs or order types before full implementation.

Once these stages are complete, the pick and pack warehouse should be ready to take over your fulfillment. As you proceed, keep an eye out for common implementation challenges:

  • Inventory discrepancies: Conduct thorough cycle counts before and after transfer
  • System integration delays: Allow extra time for custom platform connections
  • Staff training: Ensure your team understands new processes and reporting
  • Customer communication: Notify customers about potential shipping changes

The following section goes over critical elements of evaluating the performance of your pick and pack warehouse.

Measuring and optimizing pick and pack performance

Effective performance monitoring ensures your pick and pack warehouse delivers the results your business needs. Track key metrics that directly impact customer satisfaction and operational efficiency.

Pick and pack metrics & benchmarks, 2025

Performance metric Benchmark Monitoring frequency
Order accuracy 99.5%+ Weekly
Same-day processing 85-95% Daily
Cost per order 15-25% below in-house Monthly
Inventory accuracy 99.5%+ Monthly
Customer satisfaction 4.5+ stars Monthly
Returns processing time 24-48 hours Weekly


Regular performance reviews with your provider ensure continuous improvement. Monthly business reviews should cover operational metrics, cost analysis and strategic planning for growth or seasonal changes.

Optimize your pick and pack warehouse with Cart.com

Mid-size and large business owners looking for the right pick and pack warehouse option have a lot of challenges to consider. At Cart.com, we provide solutions to them all, blending a nationwide network of fulfillment centers with AI-powered tech solutions to provide you with the most comprehensive logistics solution possible. Reach out to us here to see what we can do for you.