Product review (4 stars): I did get 10 of them, and they work!
I bought these 9 months ago and have gone through one or two of them in that time. Unlike some of the other reviewers, we got 10 of them, like the item description says. They're straightforward to install and keep our utility sink from clogging. The amount of lint they catch is pretty incredible. The only downside is that they must be replaced periodically, and I am lazy about doing it.