The United States Postal Service charges a rate per pound for shipping. This rate is based on the weight of the package, not the size.
The USPS rates for first-class mail, Priority Mail, and Express Mail are shown below. .
First-Class Mail:
Up to 3 ounces: $0.45
3.1 to 9.9 ounces: $0.70
10.
0 to 29.9 ounces: $1.15
30.0 ounces +: $1.60.
Priority Mail:
Up to 3 ounces: $6.9 ounces: $10.9 ounces: $17.10
30.0 ounces +: $25.45.
Express Mail:
Up to 3 ounces: $13.90
3.9 ounces: $20.90
10.9 ounces: $32.90
30.0 ounces +: $45.00.
