I'm not sure who in their right mind (or left) would do it, but you can save $50 if you're an educator buying a CD-ROM-only iBook:

Apple Store (U.S.):
$949.00
800MHz PowerPC G4
256K L2 cache @ 800MHz
12-inch TFT Display
1024x768 resolution
128MB DDR266 SDRAM
30GB Ultra ATA drive
CD-ROM
ATI Mobility Radeon 9200
32MB DDR video memory

Configured for education only