Although it would be large, it could also be a bundle, if they are tied together with string or wire. You could also say it's a lot. I don't mean that facetiously. If you are discussing inventory or contracts, you can order a lot or job lot of material.
I want to describe the exact set of 1000 shopping bags. if you pay 10 dollars you can get a bunch/bundle of 1000 shopping bags tied together with string or wire because they are a set.
Then, can I say, 'I bought a set of 1000 shopping bags for 10 dollars.'?