If you're on a thrifty mission, your best bet is these Bonobos Casual Pants. It's a popular product, while not very costly. Another strong contender for your wardrobe is these Topman Chinos. While the price of this piece is rather reasonable, it will surely attract a lot of attention. Or you can choose these Tavik Chinos - be sure you'll be making a stylish addition to your wardrobe.
If you're looking for a bargain, why not check out these DL1961 Chinos. While the price is very reasonable, this product is an easy wardrobe update. You can also take a look at these Burberry Chinos. It's an attractive option both price and quality-wise. And do check out these Vince Casual Trousers! It's a very popular item and good value for money.