ANYONE HEARD/USED "SEA PET STORE"

A canine nutrition expert told me that this website: http://www.seapet.com/seastarrstore/ sells the best fish oil to give to my almost 6 mo. old male GSD as a skin/coat supplement. I went in their website, checked it out, it is SUPER expensive and has ZERO reviews. I am kinda leery about ordering it without any word of mouth from any of you GSD lovers. Any experience/input on it? Please help.