I don't know of any over here that are PG free, most would at least have it in their flavouring. I haven't tried them but juicewhore are supposed to be decent and have a 100% VG option, you would have to ask them to confirm though. Otherwise if you are allergic to PG or something you can get alcohol based super concentrates from the juice factory. If buying from overseas it wouldn't be worth the trouble with doublers, you might as well just get ready to vape juice with nic in it.