Boys' Cherokee Corduroy pants: $7.49 at Target!
A suggestion if you fall into that category: try Target. The prices are in the same range as Wal-Mart, cheaper on certain items on sale, and the quality is so much better -- essentially comparable to Old Navy or similar lower-end well-known labels.
A quick search through the clearance section of Target's website turns up a great sale on Cherokee-brand corduroys: all boys sizes $7.49, 50% off the retail price of $14.99. Take a look and, if your son is into cords, buy them in both colors:
click here for boys and here for girls.