If you're on a thrifty budget, these Monocrom Jeans will fit the bill. It's a great choice, while not very costly. Another strong contender for your wardrobe is these Polo Ralph Lauren Jeans. While the price of this product is not too high, it will definitely attract a lot of attention. You may also want to look at these Scotch & Soda Jeans. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking for something in between pricewise, opt for these Jeckerson Jeans. While the price is very reasonable, this piece is an easy wardrobe update. It's also worth checking out these Liu Jo Jeans. This product is ultra popular and, just as importantly, not too pricey.