For all of you Canadians, I think London Drugs has a decent deal on the Pentax DA 50mm f1.8.
It's currently at $169.99. I saw one in store today while shopping (took a snap, see attached pic). I went online, and the price is the same:
Pentax DA 50mm F1.8 Lens - 22177 - London Drugs
In BC, with our 12% tax, this means you can have it for $190.39, in your hand immediately (no shipping hassle) with box and papers, and the standard 2 year Canadian warranty.
Obviously the final price depends on taxes in your province, as well as stock at your local London Drugs, but if you are in Canada and are thinking of getting this lens, this might be worth checking out.
I always hope London Drugs sells Pentax stuff regularly because they seem to be the only big box store left that sells Pentax gear. Hopefully this leads to a few sales for them.