I'm wondering myself the difference between a pieced together foul weather outfit from REI and actual marine foul weather gear. I'm thinking it's only in the logo. I just got a Icebreaker(sportwool) base layer, a marmot zip up jacket and matching lime green(for high visibility) marmot rain jacket for my foulies and I don't think a marine brand would be better, maybe not even as good.
Cheaper though. You can piece together a pretty spendy outfit at REI.
At Dick's there are some good quality North Face or Columbia rain jackets and pants at about 60 dollars a piece. With a good jacket underneath I think you'd be well served.