If I can get 50 percent off sitka gear is it worth it? Also what jacket/pants/bibs ?

So I can get a 50 percent discount from a buddy who gets the “family/friends” discount for the next week or so. A lot of the guys in the duck camp I’m in in Arkansas wear it. I personally know nothing about it besides that it’s expensive. Is it worth it at 50 percent off? What jacket/pants/ bibs to get? I duck hunt Arkansas rice fields out of pit blinds where it is cold and windy a lot of times, and also duck hunt Venice. I deer hunt Kansas for a week out the year, then Vicksburg Mississippi the rest of the season. I can buy a couple items myself and then get a couple as a early Christmas present. Any recommendations would be helpful. I have plenty camo jackets for cool weather, but nothing waterproof or for really cold weather (I usually just layer heavily) and my bibs I’ve had for 10 years zipper finally popped, so I don’t have any warm pants/bibs.