Versilian Studios has released a sampledharpsichord. It includes two stops, releases, and 4x Round Robin multisampling. There are also adjustable key press sounds. An advanced Kontakt version also includes stereo panning and width parameters and a low/high pass option. A total range of 4.5 octaves is provided.
Price: $15. It is available for Windows and Mac OS X in VST and AU formats, and additionally as two instrument patches for Kontakt 5.4.3.307+.