USPS Shipping Costs with eBay Discounts

It seems like every January USPS increases their prices. Below are the prices along with eBay discounts as if Dec 23, 2014

Speed Description Size (inches) Weight USPS Price eBay Price Package Price
Priority Mail FLAT RATE Envelopes
1-3 days FLAT RATE Envelope 9.5 x 12.5 < 70 lbs $5.75 $4.95 FREE
1-3 days FLAT RATE Envelope – Gift Card 10 x 7 < 70 lbs $5.75 $4.95 FREE
1-3 days FLAT RATE Padded Envelope 12.5 x 9.5 < 70 lbs $6.10 $5.35 FREE
1-3 days FLAT RATE Legal Envelope 15 x 9.5 < 70 lbs $5.90 $4.99 FREE
Priority Mail FLAT RATE Boxes
1-3 days FLAT RATE Small Box 8.6 x 5.4 x 1.6 < 70 lbs $5.95 $5.20 FREE
1-3 days FLAT RATE Medium Box 11 x 8.5 x 5.5 < 70 lbs $12.65 $10.65 FREE
1-3 days FLAT RATE Medium Box 2 13.6 x 11.9 x 3.4 < 70 lbs $12.65 $10.65 FREE
1-3 days FLAT RATE Large Box 12 x 12 x 6 < 70 lbs $17.90 $14.80 FREE
1-3 days FLAT RATE Large Box – Board Game 24 x 11.75 x 3 < 70 lbs $17.90 $14.80 FREE
1-3 days FLAT RATE Box 1 11 x 8.5 x 5.5 < 70 lbs FREE
1-3 days FLAT RATE Regional Box A1 10 x 7 x 5 < 15 lbs $10.72 $9.97 FREE
1-3 days FLAT RATE Regional Box A2 11 x 2.5 x 13 < 15 lbs $10.72 $9.97 FREE
1-3 days FLAT RATE Regional Box B1 12.25 x 10.5 x 5.5 < 20 lbs $17.03 $16.28 FREE
1-3 days FLAT RATE Regional Box B2 14.5 x 3 x 16.25 < 20 lbs $17.03 $16.28 FREE
1-3 days FLAT RATE Regional Box C 15″ x 12″ x 12″ < 25 lbs FREE
Priority Mail Boxes
1-3 days Package / Thick Envelope < 70 lbs Varies 13% off
1-3 days Large Package < 70 lbs Varies 13% off
1-3 days Tyvek Waterproof Envelope 11.6 x 15 < 70 lbs Varies 13% off FREE
1-3 days Box – 4 7 x 7 x 6 < 70 lbs Varies 13% off FREE
1-3 days Box – 7 12 x 12 x 8 < 70 lbs Varies 13% off FREE
1-3 days Box – 1092 12 x 13.4 x 2.75 < 70 lbs Varies 13% off FREE
1-3 days Box – 1095 15.25 x 12.4 x 3 < 70 lbs Varies 13% off FREE
1-3 days Box – 1096L 9.25 x 6.25 x 2 < 70 lbs Varies 13% off FREE
1-3 days Box – 1097 11.5 x 13 x 2.4 < 70 lbs Varies 13% off FREE
1-3 days DVD Box 8 x 5.4 x 5.6 < 70 lbs Varies 13% off FREE
1-3 days Shoe Box 7.5 x 5 x 14.4 < 70 lbs Varies 13% off FREE
1-3 days Small Tube 25 x 6 x 6 x 6 < 70 lbs Varies 13% off FREE
1-3 days Medium Tube 38 x 6 x 5 x 5 < 70 lbs Varies 13% off FREE
First Class Mail
2-5 days Package / Thick Envelope 84″ L + Girth 1 oz $2.32 $1.93  
2-5 days Package / Thick Envelope 84″ L + Girth 2 oz $2.32 $1.93  
2-5 days Package / Thick Envelope 84″ L + Girth 3 oz $2.32 $1.93  
2-5 days Package / Thick Envelope 84″ L + Girth 4 oz $2.50 $2.01  
2-5 days Package / Thick Envelope 84″ L + Girth 5 oz $2.68 $2.09  
2-5 days Package / Thick Envelope 84″ L + Girth 6 oz $2.86 $2.25  
2-5 days Package / Thick Envelope 84″ L + Girth 7 oz $3.04 $2.42  
2-5 days Package / Thick Envelope 84″ L + Girth 8 oz $3.22 $2.59  
2-5 days Package / Thick Envelope 84″ L + Girth 9 oz $3.40 $2.76  
2-5 days Package / Thick Envelope 84″ L + Girth 10 oz $3.58 $2.93  
2-5 days Package / Thick Envelope 84″ L + Girth 11 oz $3.76 $3.11  
2-5 days Package / Thick Envelope 84″ L + Girth 12 oz $3.94 $3.29  
2-5 days Package / Thick Envelope 84″ L + Girth 13 oz $4.12 $3.47