Amazon offers Prime members the Levi's Men's 511 Slim Fit Jeans
in Petrol for $16.79
with free shipping
. (Non-members can spend $35 to qualify for free shipping; otherwise, it starts at $5.48.) That's the lowest total price we could find by $10 and a very low price for Levi's men's jeans in general. They're available in waist sizes from 28 to 40 and inseams from 30 to 36.
Note that this item is backordered but can be ordered at this price for delivery when available.