:thumbup: Me too!!! Every weekend they put a brand on sale. I buy them on B1G1F in the Finest Natural brand 350 pill bottles. You get 700, 1000mg pills for about $17 AFTER tax! Can't beat it!
I've only ever used pet specific FO once and I saw really no difference besides the extreme price difference. A 1 month supply for both my little dogs was $14-$15 after tax in the dog specific stuff...For $17 (Again, I only buy when it's B1G1F) in the human stuff, it last me (since I take it too) and both my dogs roughly 7.5 months! As for skin and coat, it all works the same IME. Though the bottled liquid fish oil wont keep as long as the capsules so make sure you get those. If the dog wont eat them whole, you can prick them with a needle and squirt it onto the food. A couple extra steps are worth the longer shelf life IMO.
Make sure you supplement with vitamin E too!! For a GSD, give 400 IU a day.

You can use the human supplements for those too. Just check the back to make sure it's d-Alpha rather than dl-Alpha. (Which is synthetic) Again, I buy these B1G1F for super cheap.