In the past, BMWNA has helped cover the cost of a cluster replacement. I had mine replaced for labor only (roughly 1 hour of labor) & free parts.
In e38.org there is info on who to contact at BMWNA to start the process. I understand it depends kinda on how long you've owned your BMW, any previous BMWs owned & other factors.
2000 740iS. MKIV, 16x9, DDEs controlled by Euro fog light switch, reversed steptronic +/- pattern, paddle shifters, clear corners, Basslink, iPod video with stereo audio, TV tuner, gauge rings, ///M pedals, backup camera with 'on demand' switch, quad brake lights, Dinan engine & tranny software, windows/sunroof close via remote.
2003 540iS. MKIV, 16x9, PDC, CWP, TV tuner, backup camera with 'on demand' switch, paddle shifters, windows/sunroof close via remote, iPod video & audio.