Unless you live in perpetual summer, a coat is your best friend when winter comes. What style do you prefer? Is it clean cut double breasted coat, a cozy blanket coat or a trendy cape?
If you can’t spend much, your best bet is this J.Crew Coat. It's a popular item, while not very expensive. In this price range, you can also consider this J.Crew Coat. It's also a popular item and won't break the bank.