The Origin Minis look pretty good and are a fair price. That's what I would buy if I was starting out. I bought the Path Gaming set and I'm pretty happy with most of it, except I don't really need 4 copies of the PC characters. You should also go to your local dollar store and get a baggie of spiders, ants, and centipedes.

If you want to make some mini's on your own, here's a guide: https://docs.google.com/document/d/1qZKqXN1EPB03xfVoP3UYbxmUmHrQm7fR_XJpsraQQUY/edit