i bought a 'field jacket' from an op shop fairly recently. it was made by the brand mr simple, and i think i was quite lucky to find it where i did. i bought it for 45 dollars, considerable less than the 250 recommended retail.
one thing i really like about it (apart from the heat conservation benefits) is that the lower (waist) pockets have two pocket sections. there's one button portion at the front, and on the side entrance to the same pocket there's a completely separate pocket for putting your hands or something else in.
go shop at op shops! bargains to be found for sure!!