They really are very good for storing your pens.
Like I said, I have had 2 of them for a number of years now and they look and feel just like the new ones I purchased a few months ago, they have stood the test of time very well.
If all your after is something to keep them clean and safe then this is the best (Cheap) option, if your after something to display pens then I would go for something totally different. 