A couple of possible good deals.
At B&H used lenses I spotted the following possible good deals.
Condition 9+ Sigma Wide Angle 24mm f/1.8 EX Aspherical DG DF Macro Autofocus Lens for Pentax AF for US $250. That is about $300 less than the cost of a new one.
Condition 9 Sigma Zoom Telephoto 70-200mm f/2.8 EX DG APO Autofocus Lens for Pentax AF for US $500.
Ron - 'We don't have time to go take pics this afternoon Carl.'
Carl - 'What do you mean? It will only take 1/1000s.'
'Keep your eyes looking forward. However, glance back now and then to see where you've come from. It will put a smile on your face.' ~ brandrx