Apple Cards
Apple Fast Ethernet 10/100Base-T PCI Card SA0025 Rev: 01B
$45
Available 
Applied Engineering GS-RAM Apple IIGS Expansion Card with 1MB Memory
$85
Available
ATTO ExpressPCI PSC 50p 68p Ultra Wide Hard Disk Drive SCSI Controller PCI Card
$40
Available
Mac Pro RAID Card A1247 PCIe With A1228 Rechargeable Battery
$50
Available