Was just offered a trade: I receive OBJ and I give up demariyus Thomas, buck Allen and coby fleener, standard league (I have decent depth)?

That's too much to give up for Beckham

You really get OBJ plus two waiver pickups.

I think this is an insanely good deal for you, the kind of buy-low trade that wins leagues. Absolutely go for it.

You've just been insulted! Forget the big name. The Giants have now been shut down in 2 games vs fairly bad defenses. OBJ isn't going to perform miracles when he gets to full health. They still have a QB who can't throw anymore and an atrocious OL.

When you say you have decent depth with what you're giving up, this may or may not be true. But if true, it means you drafted well. If you want to upgrade at WR, use your RB depth to get something much more reliable. One of the biggest mistakes people make is chasing big names and ignoring what's happening with them right now.