MegaMacs offers the Replacement SuperDrive for MacBook and MacBook Pro GSA-S10N Superdrive, model no. 678-0558A, for $27.99 plus $6.44 for shipping. That's the lowest total price we could find by $10. This slot-loading drive burns DVD+R and DVD-R discs at 8x, DVD+RW at 6x, DVD-RW at 4x, DVD-ROM at 8x, CD-R at 24x, and more.