新是指brand new or new fashion? 又…又结构暗含对比，commonly，人们不会拿brand new 和 cheap对比，但后者会。

No. 这是你新买的羽绒服吗，肯定很贵啦!（very polite and useful way to get the wearer to tell you what you want to know.) Yeah, you don't need to ask s/he directly. 'cause all we need to do is to praise her/his new clothes by implying that this is a nice new coat and that it must be expensive. Then, typically, you'll find the wearer will start to tell you everything you need to know. Anyways, that's one typical way of asking questions, praise to ask(Sorry, I can't find a better way to describe it so I make up the phrase). If you don't like that, you can ask directly by saying: 这是你新买的吗？ 贵不贵呀？

Thanks so much

No. It can be construed that at the wearer is not rich enough to afford and so got a cheap one instead if you use. What you need to say is something on the lines, "it must have cost you much." 你的新羽绒服一定是非常珍貴的"

Thanks so much