Shipping Guides
Long-form, evidence-based guides on US shipping and international logistics. Real carrier cost comparison, the dimensional weight billing trick that doubles shipping cost, DDP vs DDU for international ecommerce, when shipping insurance is worth it, and the right free shipping threshold for your products.
USPS vs UPS vs FedEx vs DHL: Real Cost Comparison by Package Size
A data-backed comparison of the four major US carriers for small to large packages, domestic and international, with pricing patterns by weight, size, and distance.
Dimensional Weight: The Billing Trick That Doubles Your Shipping Cost
How DIM weight pricing works, why a 1-pound box can cost $30 to ship, the DIM divisors each carrier uses, and how to package to avoid the DIM penalty.
International Shipping: DDP vs DDU and Who Pays Customs
Incoterms explained in practical terms — the difference between DDP (Delivered Duty Paid) and DDU/DAP (Delivered Duty Unpaid), why it matters for ecommerce, and how to structure international shipments.
Shipping Insurance: When It's Worth the Cost
How shipping insurance actually works, the base coverage carriers include for free, third-party insurance providers, and the claim process that determines whether insurance is worth the cost.
Free Shipping Math: What Threshold Actually Works for Your Products
How to calculate the right free shipping threshold for your product margins, why "free shipping" affects conversion more than prices, and A/B testing patterns that actually work.
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- Shipping calculator → estimate by carrier and route
- Compare rates → side-by-side carrier comparison