Why are the greens right on the field $150 compared to the reds at $350 right above it?
Will you not be able to see from those seats?
Probably not.
Remember, that far down in the lower bowl, you're going to have to look over the boards. Except that instead of pressed up against the glass so that you can see the ice, you're going to be 100+ feet from the boards. That's going to make it near impossible to see the puck any time it is along the near side boards, or even any time it's on that half of the rink. And that's just if you get a seat outside the neutral zone. If you end up sitting center ice, your seats are also going to be stuck behind the benches where all the players and coaches are standing in front of your line of sight. Add in the TV camera trucks and other photographic personnel lining the foreground.....you aren't going to see half of the playing surface if that.
You'd still be closer than most other folks, and you'd have an up close look at the pageantry and other things going on at field level, but you aren't going to be seeing much of the puck.
Here's a photo of the rink setup for the Winter Classic at Heinz Field a few years back.
In that shot, you basically can't see any of the ice closer than the faceoff dots. That's about 1/3 of the rink. And the photographer is clearly standing. Now imagine SITTING in one of those seats that's actually in the 1st 20 rows of that picture. The lower you go, the less ice you see.
If you just want to be relatively close to the action and don't care about whether or not you can see the puck for roughly 1/3-1/2 or more of the game, you can sit field level for $85-$150. If you want to actually see the puck for most of the game at a distance only slightly further than the farthest nosebleed seats at the Shark Tank, pay $350.
Though, based on what I read from other teams' stadium events, the upper deck is probably your best value. You'll still be 2-3 times further away from the ice than the farthest seats at the Shark Tank, but you'll be able to see most of everything.