If you're looking for an item in the middle of the price range, consider purchasing this Vince Sleeveless Top. While the price is very reasonable, this item is an easy wardrobe update. It's also worth checking out this Vince Short Sleeve Blouse. This product is extremely popular and, just as importantly, not too pricey.
If you have enough to afford it, then what you're looking for is this Vince Tunic. It's more expensive but worth your money.