Thanks to Steve Jobs 'forward thinking', Macs haven't supported PCI(e) cards for a while, and thus many people are letting go of their Motu 424 gear SUPER cheap! Just picked up a 2408MKII for $20 on Ebay! Shipping was more than than the item cost, but there's some incredible deals to be had; seen MKIII's go for $150 and PCI-424 cards for under $100.