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If you don't mind manual there is a used Kalimar PKA 60-300mm on ebay.com for $36 incl shipping to the us only. Maybe you can have someone re-ship it to you?
KALIMAR MC AUTO ZOOM LENS 60-300mm f/4-5.6 - GOOD USED - PENTAX K (PK) MOUNT | eBay
Look closely at the photo of the lens' base; it is an A type! I'd buy it NOW. It is a good lens according to reviews I've read.
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/53052-kalimar-...tml#post519510
Last edited by newarts; 01-25-2012 at 09:58 AM.