Today only. Sierra Trading Post has the Men's Flat Front Dress Pants (multiple colors) for $10 + $3 shipping when you sign up for emails* = $13 shipped. They say they're made by "a famous retailer/brand" but don't say which one.

*In cart, click the "Take 50% Off Ground Shipping Today!" right under the Shipping Estimate line; enter your email address and shipping will automatically go from $6 to $3.