Wow!
Software Raid cards are cheap, but what's the point? They're the same as the onboard chips or worse in most cases. Personally, if it's a high end desktop like he's going for or a TRUE workstation, I would recommend a software raid 1 or an external hdd with Acronis. For serious workstations or servers, I love the Dell Perc 5/i or HP's card (can't remember what it's called). There are also some good PCI Express and PCI X cards out there from Adaptec and areca.
In this situation, I would recommend a good external hdd and Acronis true image home.