PowerBook Titanium : change the processor

Sonnet is proposing for 499.95$ to change the processor of any PB G4 550 and 667MHz Titanium by a G4 clocked at 1.2GHz.
This offer is currently available only in the USA, and requires to ship the entire machine in order to get the processor replaced.
This opportunity might only interest some mac users, in love with their Titanium and who have taken great care of their notebook. Indeed, if the cost of this processor exchange is less than buying a new notebook, other components in the Titanium will remain "old" and especially the graphic card.