If you're looking for an affordable item, your best bet is this The Fifth Label Tank. It's a terrific product, while not very costly. You can also consider this Leith Tank. It's a product you'll fall in love with which also won't break the bank. You may also want to look at this Lush Tank. This item is not expensive either, but it will make a difference in your wardrobe.
For something in the middle of the price range, we recommend taking a look at this Alice + Olivia Tank. While the price is very reasonable, this product is an easy wardrobe update. It is also worth looking at this Misook Tank. It's an attractive option both price and quality-wise. And do check out this Helmut Lang Tank! It's a very popular item and good value for money.
If you want to treat yourself, then you absolutely must check out this Lanvin Tank. This item seems expensive, but it's worth it. Why not take a look at this Brunello Cucinelli Tank too? Expensive, but worth every penny. In this price range, you can also take a look at this Chloé Tank. You won't regret the money spent!