Best deal on cheapo new or used DVD cases?




I am looking for some plain 1 disc DVD cases, for regular stuff I record off the TV. They got to have the sleeve to slide some artwork.
They can be new or used, I need about 100 for now. They don’t even have to be all the same.
I went to 2 DVD rental places where I am a customer and they said they had none, including a blockbuster.
Just wondering if anyone knows a good deal somewhere online.

Thanks a lot