Buying a mayumi v4 Modchip

Hey there

I'm currently looking for a respectable seller of a mayumi v4 modchip.
Couple of issues tho.
1. the mayumi v4 chip must be for a ntsc console.
2. I live in australia, so the seller must be able to ship to Australia. sidenote, cheaper shipping would be preferable. Aka in the ~10 american dollar range.

Thats pretty much my problem right now.

If someone can link me to their trusted seller, it would be much appreciated.

Thank you.