Translating German

Every day I receive in my in-box a "Word Of The Day" email from a translation services company (http://www.transparent.com/). Sometimes what turns up is amusing or interesting. This one, which falls into the latter category, was there this morning:

German: Ja. Gut, dann kauf' ich alle drei. Ja.
English: Yes. Well, then I'll buy all three. Okay.

I just like the use of the the word "Ja". Two different meanings in the one phrase. Cool.