The rate is based on the zip code you enter for the store in the WA_Globals.php file and the shipping zip code the costumer enters, as well as the weight.
you can add the following code to the confirm page between the body tags to return the full xml request and response from the UPS server for trouble shooting, post this information back and we will be able to get a better idea of what is going wrong. it could be the packaging type you have selected.
<?php
if(!session_id()) session_start();
echo("UPS Full Request :<br />");
echo("<code>".isset($_SESSION["WA_Store_Cart_UPS_FullRequest"])?$_SESSION["WA_Store_Cart_UPS_FullRequest"]:""."</code><br /><br />");
echo("UPS Full Response :<br />");
echo("<code>".isset($_SESSION["WA_Store_Cart_UPS_FullResponse"])?$_SESSION["WA_Store_Cart_UPS_FullResponse"]:""."</code><br /><br />");
?>
The prices you enter cannot start with a decimal, to enter a price less than a dollar, you must include the leading 0:
0.25
is a valid price, but:
.25
is not.