Oct 2, 2026
Pick and Pack Fees Explained: How to Compare 3PL Quotes
Learn how 3PL pick and pack fees work, what is included, how extra-item charges change unit economics and how to compare fulfillment quotes fairly.
Read guidePackToolbox Guides
Guides
Practical explainers for packaging, shipping, pallets and freight—built to complement the calculators.
Oct 2, 2026
3PL Storage Fees Explained: Pallet vs Bin vs Cubic Foot Pricing
Compare 3PL storage fees by pallet, bin, shelf and cubic foot, and learn how inventory profile, seasonality and utilization change the real monthly cost.
Read guideOct 2, 2026
Package Measurement Rounding Rules: FedEx vs UPS vs USPS
Compare how FedEx, UPS and USPS handle package dimensions and rounding so shipping teams can avoid billable-weight and surcharge surprises.
Read guideOct 2, 2026
Address Correction Fees: How Bad Address Data Raises Shipping Costs
Learn how incomplete or incorrect addresses create carrier correction fees, delivery delays and bad shipping forecasts—and how to reduce them at checkout.
Read guideOct 2, 2026
Residential Delivery Surcharge Explained: FedEx vs UPS
Understand residential delivery surcharges at FedEx and UPS, how address classification affects cost and what ecommerce shippers can do to reduce surprises.
Read guideOct 2, 2026
UPS Ground Saver Non-Compliant Label Fee in 2026
UPS introduced a Ground Saver Non-Compliant Label Fee in 2026. Learn what triggers it, how to prevent it and why shipping-system compliance matters.
Read guideOct 2, 2026
USPS Nonstandard Fees in 2026: Length, Cubic Volume and Shape Charges
Understand USPS nonstandard fees in 2026, including length, cubic-volume and shape triggers, plus practical ways to reduce avoidable parcel charges.
Read guideOct 2, 2026
Priority Mail Cubic vs Ground Advantage Cubic in 2026
Compare USPS Priority Mail Cubic and Ground Advantage Cubic in 2026, including eligibility, size limits, soft-pack rules and when each pricing model makes sense.
Read guideOct 2, 2026
Customs Brokerage Fees Explained: What Importers Pay and Why
Separate customs broker service fees from U.S. duties, Merchandise Processing Fee, Harbor Maintenance Fee, disbursement and other import charges when building landed cost.
Read guide