Pick and pack is where order accuracy lives or dies. One wrong item in a box means a return, a refund, a negative review, and wasted shipping costs in both directions. At MeisterPrep, we run pick and pack operations across four US warehouses in Long Beach CA, Des Plaines IL, Houston TX, and Charleston SC. Each location follows the same standard operating procedures, trained against the same accuracy benchmarks, using the same WMS. That consistency matters when you're splitting inventory across locations to reduce delivery times. Whether you're shipping 20 orders a day from a single warehouse or 2,000 orders a day spread across all four, the pick accuracy stays at 99.7% or higher. We handle orders for Amazon FBA, Walmart Marketplace, Shopify, TikTok Shop, D2C subscription boxes, and B2B wholesale, and each channel's packing requirements are built into the workflow from day one. The difference between a 3PL that does pick and pack well and one that doesn't shows up in your return rates, your seller metrics, and your shipping spend. Mis-picks cost an average of $15-25 per incident when you factor in return shipping, restocking labor, replacement shipping, and the refund itself. At 1,000 orders per month, even a 2% error rate means 20 mis-picks and $300-$500 in avoidable costs before you count the impact on customer reviews.