Your post disturbed me, as I also use Vim. Maybe 2 years ago I bought a pack of 4 from Belgium. I don't use much - mainly for my enamel bath and steel sink top, and I've one more bottle to use, so I will have the same problem when that's used up.
I don't use Pyrex dishes, and if I did I doubt I would use Vim. Why not use expendable metal dishes, which are cheap enough to renew when they get too bad?