What is the cheapest reliable way to ship 200 ceramic mugs in November without breaking them?

Double-walled corrugated boxes with custom-cut foam reduce breakage to under 1 percent vs 4-5 percent for kraft mailers, at roughly 2x the per-unit cost.

USPS Priority Mail dimensional weight calculator: ceramic mugs over 12 oz hit dim-weight pricing in flat-rate boxes . regional rates beat flat in zones 1-3.

For 200 mugs across 7 zones, is regional rate plus inserts cheaper than flat-rate plus mailers, when breakage refunds are included?

Compute total landed cost per zone for both options. Include a 3 percent breakage refund line for kraft and 0.8 percent for double-wall.

Quick model with the assumed breakage rates: regional + double-wall cheaper above 5 lb in zones 4+. Below that, flat-rate is the move.