Well just purchased the filters. I know they aren't the best but I know the work and good price. Only worry is there is no case. Has anyone got a soloution for this?

Something like this will work -- or you can just keep them in the box they come in. I wouldn't exactly call it a "case", but it does offer what should be decent protection for most people. And if you don't want to use the box for some reason you could just use a rubber band to keep the foam cover in place.