Currently it's almost impossible to get the 1GB version through Apple's webstore or other large shops including Amazon, Wal-Mart, Best Buy and Circuit City.
Apple's Web store has been out of stock on the 1GB shuffle since mid-December, according to enthusiast site AppleInsider.com. A survey of 12 Apple retail stores chosen at random found seven didn’t have the shuffle in stock and didn’t know if they could get any more.According to rumours last month Apple may be planning to launch a new, better iPod shuffle this month. The new version supposedly has a LCD display.
This is in comparison to the Nano, which were in short supply in the run up to Christmas, but now seem to be in abundant supply again.