We use the rubber bands around a flyer we distribute to homes in our area advertising our annual Mulch Fundraiser for our Boy Scout troop. Each year I buy at least 6 or 7 bags of rubber bands and we wrap them around about 7000 flyers. They have always worked well and are very sturdy.
We purchase these rubber bands mostly to hold our plans that we submit for plan reviews/permits to the respective cities that we are developing in and they seem to do the trick no matter how many pages our set(s) have these rubber bands can handle it.