I know the price will fall further but I've been watching/lowballing the eBay auctions for K20s for the past 3 weeks and finally got one for $630US today from Prodigital (best price I've seen on the auctions so far). The warranty appears to be an international one year version (the Canuck version is 2 years which would be better for me but I can't complain).
Keep your eyes on these auctions because there is definitely a pattern related to day of week and time of day.
Happy to be one of the K20D crowd!