If you are on a tight budget, this Eliza J Shift Dress will fit the bill. It's a popular choice, while not very pricey. Another smart option is this Topshop Shift Dress. While the price is competitive, be sure that this piece will become a wonderful addition to your wardrobe. You may also want to look at this CeCe Shift Dress. This item is not expensive either, but it will make a difference in your wardrobe.
If you're a bargain hunter, look no further than this Eileen Fisher Shift Dress. This item won't break the bank, but absolutely invaluable in your wardrobe.