For something in the middle of the price range, we recommend looking at this Tomas Maier Pea Coat. While the price is very reasonable, this item is an easy wardrobe update.
If you want to treat yourself, then what you're looking for is this Neil Barrett Peacoat. It's more expensive but worth your money. While you're at it, also have a look at this Gucci Peacoat. Yes, this item is expensive, but it does not mean it's not worth it. And how about the luxurious Gucci Peacoat? Yolo, right?