There seems to be a significant price drop on this lens at the moment. I haven't followed the price on these so I am not sure if it is a big deal, but I am tempted myself. Here are some links:
Samyang 14mm f/2.8 ED AS IF UMC Lens for Pentax K SY14M-P B&H https://www.adorama.com/sy14mpx.html?
Amazon has it at the same price, with no mention of any price drop. Go figure:
amazon.com : Samyang SY14M-P 14mm F2.8 Ultra Wide Angle Lens for Pentax : Digital Slr Camera Lenses : Camera & Photo?tag=pentaxforums-20& 
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