Other World Computing (OWC) today announced an immediate price reduction on its Mercury Internal SuperDrive Upgrade Kit for PowerBook G4 Titanium 15″ models and Aluminum 12″, 15″ or 17″ models. The complete OWC line of SuperDrive options includes models with top speeds of 16X DVD and 40X CD burn speed capabilities for nearly all PowerMac and PowerBook models. The upgrade kits are now priced at US$129.99 with a cash rebate for trade-ins.