If you're looking for a thrifty option, consider buying this Barbour Tank. It's a popular product for a good price. Why not also look at this LnA Tank. It's an item you'll fall in love with which also doesn't cost too much. You may also want to look at this Full Tilt Tank. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking for something in between pricewise, why not opt for this Cooper & Ella Tank. While the price is very reasonable, this item is an easy wardrobe update. You might also want to consider this Nobrand Tank. It's an attractive option both price and quality-wise. Alternatively, opting for this Theory Tank is a smart choice as well!