I wouldn't call them useless. I bought my Nissan engine air filters and Nissan rear brake pads there for $84 Cdn with free shipping and it arrived in less than 24hrs. This was my second time ordering from them with the same excellent results both times.
This is not to say we can't find cheaper quality or less expensive items elsewhere, just don't knock them if you've never tried them.

 

I don't know how much these things cost but i am a poor college student. I took mine out, had a powerful vacuum cleaner and now it's white again.