Where can I find Complete Seasons on DVD?

I know this is probably the last thing people want to hear after this scandal, but I was wondering if anyone knew where I could find the Complete Season 1 and Season 2 of Hey Dad on DVD. I've read that they released it in Germany (although with English audio). I have the 'best of' Volumes 1 & 2 but would love to see some of the earlier episodes.

Any help would be appreciated. Thanks.