Browsing Amazon and found these womens jackets > 70% off.
Limited sizes and colours as below
Also, you can get a 20% off coupon (one time discount by subscribing to the Amazon fashion email newsletter
Amazon Link: http://amzn.to/ZF0SZA
Calvin Klein Women's Belted Hide Collar Soft Shell
$55 in Black (x-small, small and large)
http://amzn.to/YeJFDc
Jones New York Women's Double-Breasted Rain Trench
$50 in Bronze (medium, large and x-large)
http://amzn.to/XUAvi7
Kenneth Cole Women's Double Breasted Melton Trench
$65 in Vapor (Size 2, 4, 6, 10, 12)
http://amzn.to/XYazA4
Hilary Radley Women's Double-Breasted Zara Coat
$65 in Black/Charcoal (Medium)
http://amzn.to/YCOr0o
Kut From The Kloth Women's Spirit Peacoat Jacket
$24 in Camel (small, medium, large and x-large)
http://amzn.to/10kMqK5
Jack Women's Verdot Jacket
$20 in Black (small, medium and large)
http://amzn.to/12wEMxD
I got this coat delivered for ~46AUD the other day: http://www.amazon.com/gp/aw/d/B0089B9NTG
It's a Via Spiga Fall Rain Trench. Got it in black, small (purple was lovely too but not timeless). Traditional tan trench is still available. It's 80% off RRP and Nordstrom still sells it for about 130USD, as opposed to the also beautiful Jones New York linked above which really sells for much less than RRP.
Also, after signing up for the 20% coupon, it's sent almost immediately so you can definitely use it right away. Date-limited validity, though, so I suggest you sign up only when you're almost ready to buy.