Sometimes I get orders where the billing and shipping addresses are in different countries, like so:
Billing address: Germany.
Shipping address: Italy.
Product total: 100.
Shipping costs to Germany would be 2.50.
Shipping costs to Italy would be 10.
Invoice and order total: 100, so shipping costs of 0 (no idea where the 0 comes from).
Actual amount deducted from customer via PayPal: 110, so product price plus shipping to Italy.
Has anybody else noticed something like this?