Yo también tenía la misma inquietud asi que les envie un correo y me respondieron esto:
Hello Edgar,
Thank you for your email and your interest in Google Checkout. I
understand you'd like to use Google Checkout as a merchant from Colombia.
At this time, merchants with a US or UK business address and bank account
can only use Google Checkout. Google Checkout merchants can ship goods
inside and outside the United States and United Kingdom. We look forward
to making the service more widely available in the near future, although
we're unable to comment on the timing of Google Checkout's availability in
specific countries.
Buyers in the US and UK, and in a limited number of additional countries,
can sign up for Google Checkout and make purchases in US Dollars or Pounds
Sterling. You can check the 'Location' drop-down menu on the sign-up page,
located at
https://www.google.com/accounts/NewA...=sierra&signup, for a
list of supported countries for buyers.
Please feel free to reply to this email if you have any additional
questions.
Sincerely,
Raja
The Google Checkout Team
Espero este sea de tu ayuda.