
12" x 15" Polyjacket/Polymailer — 400 Envelopes
12″ × 15″ × 0″
+$12.40 USPS Ground Advantage · 3 lb billed
$0.23
each
$0.261 landed
pack of 400 · $92.00
Compare real eBay prices for 14×12×10 shipping boxes with DIM-weight-aware shipping estimates.

12″ × 15″ × 0″
+$12.40 USPS Ground Advantage · 3 lb billed
$0.23
each
$0.261 landed
pack of 400 · $92.00

14.5″ × 18.5″ × 0″
+$12.40 USPS Ground Advantage · 3 lb billed
$0.29
each
$0.321 landed
pack of 400 · $116.00

14″ × 14″ × 10″
+$28.50 UPS Ground · 15 lb billed
$1.11
each
$2.25 landed
pack of 25 · $27.75

15″ × 12″ × 10″
+$28.50 UPS Ground · 13 lb billed
$1.32
each
$2.27 landed
pack of 30 · $39.60

16″ × 12″ × 10″
+$28.50 UPS Ground · 14 lb billed
$1.19
each
$2.33 landed
pack of 25 · $29.75

14″ × 12″ × 10″
+$28.50 UPS Ground · 13 lb billed
$1.39
each
$2.53 landed
pack of 25 · $34.75
Showing 6 of 20 real listings. Want all of them with custom quantity and weight? Search now →
A 14 × 12 × 10 inch box holds 1,680 cubic inches (0.97 cu ft) of interior space, putting it in the large-category. It's a popular choice for shipping items like multiple pairs of shoes, small appliances, clothing bundles — things that fit comfortably within those dimensions while leaving room for protective padding. Large boxes at this size are usually sold in smaller bulk packs — 10 to 25 — because storage and shipping of the empty stock itself becomes a consideration.
Shipping cost for this size depends heavily on dimensional weight. For a 14×12×10 box, UPS and FedEx Ground compute a DIM weight of 13 lbs using their 139 divisor, while USPS Ground Advantage uses a 166 divisor, giving 11 lbs. Carriers bill whichever is greater — your actual weight or the DIM weight. USPS's higher divisor makes it roughly 2 lbs cheaper than UPS/FedEx for this size when your item is light, which is why our search results factor in DIM-weight automatically instead of just showing sticker prices.
When buying a 14×12×10 box, the biggest cost lever isn't which retailer you pick — it's which pack size you commit to. A 100-pack typically costs 2-3× more than a 25-pack but brings the per-unit cost down by 40-60%. Our ranking is based on *cost per useful box*, which gives bonus boxes partial credit — so a 100-pack can still win for single-box needs if the per-unit price is low enough, but a 25-pack often ranks higher when you only need a few. Every listing below links to a real eBay product page; we don't show placeholder results.
Pre-filled with 14×12×10. Adjust weight, quantity, or size as needed — we'll re-rank for your exact scenario.
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