postal pricing sTs Paracord

http://postcalc.usps.com/Mobile/Default.aspx?m=1&p=0&o=5&dz=90210&oz=95503&dpb=0&mdt=2015/11/03%2008:00&mt=5&dok=XX
sTs Paracord Outdoor Store in Eureka California.
Kevin Foster from Humboldt County
California
Flats”  (Large 1st Class Envelopes)

1 oz            $0.98           
2 ounces   $1.20            After 31May2015, incrementing 22 cents each additional ounce, not 21.                                                                         
3 ounces   $1.42            (fold it in half and go in a business envelope for 91 cents)
4 ounces   $1.64
5 ounces   $1.86
6 ounces   $2.08
7 ounces   $2.30         
8 ounces   $2.52
9 ounces   $2.74
10 ounces $2.96
11 ounces $3.18
12 ounces $3.40
13 ounces $3.62, up from $3.32 before Jan2014, $3.50 before 31May2015