Yes. Someone else can purchase The PM PrepCast for you.  This article explains what to do.

What you can do

To purchase The PM PrepCast™, you need an accepted credit card or a PayPal account. Unfortunately, there are several countries where credit cards are not accepted and where PayPal does not offer services. If you live in one of these countries, you can purchase The PM PrepCast™ via a friend:

• Ask a friend who lives in another country if they can buy The PM PrepCast™ for you
• Your friend now buys The PM PrepCast™ in their name
• Using the PM Prepcast Store's one step check out, they MUST use your email address and first & last name in the purchase
• You will receive the confirmation and download instructions

Now, you can start downloading and listening.

You can also make purchases using a credit card even if the user/participant in the course is different from the cardholder.

• They MUST use your email address and first & last name in the purchase
• They should use the address associated with the credit card for credit card transactions. 

Also important to know: When you log in to get your 35 Contact Hour certificate, the system will ask you for your name again, so check your name:

• Make sure that it is not your friend's name
• Check for any spelling errors
• Check that it is the complete name you want to be shown on the certificate.