This is what it is telling me for 1 oz item

weight: +lb, dimensions: regular
Setting dimensions: l=12 w=12 h=12 for Weight: 0.0625
Weight/Dimension Filtering Enabled.
Removed 'Priority Mail Large Flat Rate Box'
Removed 'Priority Mail Large Flat Rate Box'
Removed 'Priority Mail Medium Flat Rate Box'
Removed 'Priority Mail Medium Flat Rate Box'
Removed 'Priority Mail Small Flat Rate Box'
Removed 'Priority Mail Padded Flat Rate Envelope'
Added Insurance, cost:1.80 to Priority Mail

USPS Debug Mode Enabled!

weight: +lb, dimensions: regular
Setting dimensions: l=12 w=12 h=12 for Weight: 0.1875
Weight/Dimension Filtering Enabled.
Added Insurance, cost:1.80 to Priority Mail

Shipping quotes are based on the address information you selected:
Available Shipping Methods Rates
United States Postal Service (Priority Mail (2 days)) $9.85