Moved to Forum: Original Link
Edit - price now updated … was US$61.23 but coupon SS6 now exhausted. Try SS3 for US$3 off instead of 6 … now US$64.23
Coupon from original deal here https://www.ozbargain.com.au/node/780670
Can't vouch for the store and it's not clear whether this is the 38mm or 40mm version, but reviews are good and looks like you get the genuine ST1901 movement at an amazing price for a mechanical chronograph that is very interesting to look at. Note, it is hand wind only with no hacking.
Also stated as Sapphire Crystal but no guarantees of that.
Another seller with similar price.
http://aliexpress.com/item/1005005628974774.html (US$64.09 with extra strap and panda dial version available)
Take your pick for a punt. Usual price for these from other sellers is about double.
These are the unofficial version, but the "official" Sea-Gull version with same Sea-Gull movement but several hundred dollars more is not worth the money.
Reviews and info on different versions here
https://www.youtube.com/watch?v=YbdZGxpX2Mk
https://www.youtube.com/watch?v=HViB-sOJTCY
These are proper nice and crazy value at that price wow