If you're looking for an affordable item, your best bet is these Suit Pants. It's a great product, while not very costly. Another great option is these True Royal Slacks. While the price is not too high, be sure that this item will become a valuable addition to your wardrobe. Or you can choose these Dsquared2 Suit Pants - be sure you'll be making a stylish addition to your wardrobe.
If you're in a Treat Yo' Self mood, then what you're looking for is these Valentino Slacks. It's more expensive but worth your money. While you're at it, also have a look at these Brunello Cucinelli Slacks. Yes, this item is expensive, but it does not mean it's not worth it.