Vivitar 28mm F2.5 Auto Wide-Angle Prime Lens for Pentax K Mount -Clean-
$79.95 USD
Here is a fast wide-angle prime for Pentax K mount cameras or for mirrorless use with an adapter.
It is in excellent condition with light wear and works perfectly. The glass is clean and scratch-free with no haze, fungus, nor other issues. The focus and aperture are smooth.