My pair's eprint is greyer than this, but the retail pair of a friend of mine was kinda beige too like yours so this is not the factor to determine wether or not your shoes are fake. It can be that not every tongue of 3s is perfectly round but they shouldn't be totally off, so this is definitely...
On flightclub they go for over 700 bucks. If he can give you a 100% proof that they are retail authentic then 400 is a fair price, but beware of GMs as they are getting scarily close..
Just looking at the carbon fiber paper in the box, I can say straight up legit :D 23 is on point. Better take of the carbon fiber on the sole would be nice but I am 99,99 % sure that you got the real deal.
Not the top notch expert on the Breds in particular but I know my 4s and the shape of the tongue looks odd... Waffle tab pictures would be cool. I'm not so sure on this one..
I am not sure if it is the lighting and the infrared color is pretty hard to capture on a photo but I gotta say it looks a bit too light to me. Should be a tiny little bit darker. I'm not an expert on the GS, on the mensize I feel like the holes on the cushioning are to widely spread. Could be...
Hmm I wouldn't rely solely on the sole (hurrhurr), nah but seriously my retail Columbias also don't line up. If you paid via paypal, get your refund as quick as possible.
101% legit. just look at the positions of the holes in the cushioning. reps and GMs are wider spread. also the holes are big enough. i have had a GM of those on hand (got scammed but got my refund :D) and i can compare with my retail pair now. congratz on your cop.
shape, material and stitching look aight. cuts are on point and there are enough white speckles. shape of tongue seems a bit off to me but i could be wrong. to be a 100% sure i'd have to see the dots on the other side of those white "waffle tabs". you might wanna unlace your shoes and take one...