Hi Lunalander,
There is no real difference with Ainterol web sites, all orders are now processed and shipped from Thailand. The PM sold by the puerariamirifica.com.au site looks to be the same as the (UK) stuff I have used ( pueraria.co.uk ) to me it's as good as Ainterol (used both, haven't noticed any difference), never used the .com.au site, so no idea what shipping etc. is like; looks to be some form of franchised business with an outlet in a number of countries.
Hope that helps.