Monade Sounds has released Pure909, a sample-based emulation of the Roland TR-909. The 909 is an analog & partially sample based drum machine released in 1984 that was used by artists from different genres such as Aphex Twin, Boys Noize, Kanye West and Radiohead. A free light version called Mini909 has also been released, which features the complete set of newly sampled 909 drum sounds.
Price: $16 - $12 until July 1st (Eastern Time, after that) and Mini909 is free.