Thanks, but it looks like I'm getting the same result. Here's what I'm talking about.
From the Authorize.net Merchant email-
========= ORDER INFORMATION =========
Invoice : tnjp0j2bt1scmab8vv71
Description : 1 Test Tee (1)
Amount : 22.90 (USD)
Payment Method : Visa
Type : Authorization and Capture
From the Authorize.net Customer email
========= ORDER INFORMATION =========
Invoice Number : tnjp0j2bt1scmab8vv71
Description : 1 Test Tee (1)
Total : US $22.90
Tax Exempt : No
Payment Method : Visa
Item : 1
Description : Test Tee
Extra Large Test Tee description.
Quantity : 1
Unit Price : US $15.00