MT3 to ISO30 conversion on a chinese mill

I ordered some MT3 Tormach Tool holders (2 of these).
www.buyustools.com/cnc/m12-mt3-er20-coll...t-chuck-tool-holder/

I could not find any that shipped to .AU but I emailed these guys and they said they would fulfil from China for me and sent me an Invoice which I paid this morning via Paypal.

The link is bad, but the id from URL seems to point to ISO30 taper mill. As always with chinese people, later on in the list they state it as MT3 taper. Will contact and see whats the price. Thanks for the find and information. Also thank you for @spumco for detailed info. This is exactly what kind of information I need at this point. My pricing info for the mill was also from Alibaba.

As for the EU seller and getting tooling - they seems like Precision Matthews is in US - they don't do much of work other than choose specific Chinese sellers and taking 30% cut on the deal and reselling it as their product. Since we are not talking about pennies it will add up fast to thousands of euros/dollars.