If you're a thrifty spender, your best bet is this Everlane Tank. It's a great item, while not very expensive. It is also worth considering this AllSaints Tank. It's a product you're bound to love which also doesn't cost a fortune.
For something in the middle of the price range, we've got your back with this Raey Tank. This item is likely to become a total wardrobe staple. It's also worth taking a look at this Bailey 44 Tank. This product is ultra popular and, just as importantly, not too pricey. And do check out this Equipment Tank! It's a very popular item and good value for money.