Can’t buy Google eBook via @googlewallet with @AmericanExpress Canada Corporate Card.

You can make purchases through Google Wallet using a credit, debit, or gift card with the following logos:

American Express*

Discover*

MasterCard

Visa

Visa Electron**

Additionally, some customers may be able to purchase applications from Android Market using direct carrier billing.

The types of cards accepted through Google Wallet are based on the seller’s location. Other types of payments, such as checks, money orders, and direct bank account debit, aren’t currently accepted.

*  Accepted only in the United States

** Accepted outside of the United States

via Payment Methods – Wallet Help.