ITT: the most expensive software

list the most expensive software in a given market you know of.  if you actually use it, do you think the price is realistic?  and is it the best offering in the targeted market?  software collections like CS3 is ok, hardware addons not.

any gay shit with "enterprise" in mind.

"enterprise" is like a code word for FUCKING IDIOTS WITH MORE MONEY THAN SENSE

SideFX Houdini Master US$7995 (3d)
CCE SP2               US$1950 (video encoding)
Sonic Scenarist 4     US$5000-50000 (???, can't find specific price online) (DVD authoring)

also, no custom stuff, commercial only.

Well, Windows. If you happen to have hundereds of clients that need licencing and you boss is too much of a retard to finally enable you to make a volume contract.

Any P2P prog that RIAA/MPAA catch you using...