Pimsleur English for Mandarin Speakers

I’m looking for a Taiwanese distributor for Pimsleur English for Mandarin Speakers, the complete level I course. Most places I’ve looked show out of stock. Found more than a few sites that will let you download it, but I’m not sure if they’re legit. What I’d like is the CD-based course.

From the sample lesson I heard, it seems to be good way to learn a language.

If it’s no available in Taiwan, are there others like it?

Thanks in advance!