I'm from Australia so our premium brand packing cells are a different brand to yours. If you don't want to spend a lot of money then the IKEA ones still do the job just fine.
We have used ours over a dozen times so I thought I would share a tip to make them even more useful. There are 3 people in my family so we each have a large packing cell each. On the last night of our holiday I dump all the clothes on the bed together and sort them into whites, darks and colours, and that's how I pack them to travel home. Once back home I simply dump the packing cells onto the laundry floor and empty them into the machine one load at a time. My front loader will hold the contents of one packing cell. If we have been somewhere where we have taken our own towels, I pack a cell for those as well. It makes post holiday washing at breeze.
I too love them and wouldn't travel without them.