If you're looking for an item in the middle of the price range, check out this Vince Crew-neck Sweater. While the price is very reasonable, this piece is an easy wardrobe update.
If you're in a Treat Yo' Self mood, then what you're looking for is this Chloé Crew-Neck Jumper. It's more expensive but worth your money. While you're at it, also have a look at this Crew-Neck Jumper. Yes, this item is expensive, but it does not mean it's not worth it.