The phrase "a big pack of" is correct and usable in written English.
It can be used when referring to a large quantity or collection of items, often food or consumables.
Example: "I bought a big pack of cookies for the party."
Alternatives: "a large bundle of" or "a hefty amount of".
I wouldn't buy a big pack of toilet paper, because the four pack seemed like enough.
"We will have to combat this big Italian pack, but we have got a big pack of forwards who don't take a step backwards now.
Northampton Saints coach Dorian West told BBC Radio Northampton: "They've got a big pack of forwards who are good in a lot of areas.
"We're going to try to play with variety - yes, we'll try to throw the ball around and stretch teams with our backline but we've got a big pack of forwards that can play a tight game as well.
When we sit down in one of his offices which doubles as a madrassa, his aides bring bottles of Coca-Cola and a big pack of Heinz Ketchup to go with a plate of chicken drumsticks.
A single cartridge holding 10 shots costs $14 on Amazon, while a twin pack (20 shots total) of Mini costs a little less than that, or even less if you just go in for a big pack of them.
That's because the Tesla has a bigger pack of batteries.
I changed into dry clothes and put on like twelve layers and got together a rain fly and a cooking stove and a tent and a big pack full of cans of food and other shit and got out of there.
"We know that France are a big physical side, with a big pack and a bit of French flair, so we have got to win the physical battle early doors, give ourselves a platform to play from and attack from.
They have a big pack and a couple of big boys in the centre.
We'll be here all night on 22 February, a whole big pack of us, with liveblogs and video and audio and galleries and news and interactive gizmos and wordles and drinking games and much much more.
