Altatac via eBay offers the Peace On The Beach Men's Swimming Trunks in eight colors for $9.99 with free shipping. That's $30 off list and the lowest total price we could find. They come in sizes S to XL, although not in all size/color combinations.
JCPenny offers the Arizona Men's Solid Board Shorts in Phantom Grey (pictured) or Williamsburg Navy for $9.99. Coupon code "RMN15" cuts them to $8.49. In-store pickup reduces the shipping fee to $3.95. That's $26 off and the lowest total price we could find. They're available in sizes 28 to 38.
Original Penguin offers the Original Penguin Men's Fixed Volley Pieced Solid Swim Shorts in Vivacious (pictured) or Snorkel Blue for $29.99. Coupon code "opreg30" cuts that to $20.99. With $5 for shipping, that's the lowest total price we could find by $23. They come in sizes 29 to 38, although not in all size/color combinations.
ASOS takes up to 75% off a selection of men's and women's swim separates, with deals starting from $3.81. Shipping adds $4, or bag free shipping on orders of $25 or more. Note that sizes and stock may be limited.