Discounts Jungle via Amazon offers its Prime members the Panasonic DJ Street Model Headphones in Blue/Black, model no. RPDJS400A, for $15.95 with free shipping. (Non-members can pad their orders over $35 to bag free shipping; otherwise, it adds $6.51.) That's the lowest total price we could find by $8. These feature a 10Hz to 27kHz frequency response, 40mm neodymium drivers, and padded headband.
Of note, Amazon also has them in White, model no RPDJS400W, for $17.99.