Yesterday I was browsing the Kindle store - in the SciFi section - and noticed that a lot of short stories had been added (P. Dick, M. Leinster, etc.) - all listed as published by Amazon Digital Services. They were priced at .99 each. OK - my first reaction was that the number of available Kindle books is being skewed by the inclusion of short stories.
Then today I happened to go back - and all the short stories are now priced at $3.44 each! WTF??