You can get a 4 gig CF card for less than $15, or less than $20 for a fast one or a good brand. On the other hand, $27 is pretty good, especially considering the fact that you don't need the CF to IDE adapter.
I just thought I'd mention that other than using CF cards as boot devices, I'm using several as the main drives in HP Jornada computers which are running NetBSD. The most active of them has been running as a slave DNS server for about 500 domains and as a router for a subnet of public IPs. The first card I got for that machine died after about six months, but I realized that was because I was using filesystem journaling which writes the same small areas of the disk over and over and over, very frequently. When I got the replacement card, I turned off journaling, and it's been running without the slightest complaint for a year now.
I have a feeling that the above eBay item or any decent CF card these days will last just about forever in an SE/30.
I just thought I'd mention that other than using CF cards as boot devices, I'm using several as the main drives in HP Jornada computers which are running NetBSD. The most active of them has been running as a slave DNS server for about 500 domains and as a router for a subnet of public IPs. The first card I got for that machine died after about six months, but I realized that was because I was using filesystem journaling which writes the same small areas of the disk over and over and over, very frequently. When I got the replacement card, I turned off journaling, and it's been running without the slightest complaint for a year now.
I have a feeling that the above eBay item or any decent CF card these days will last just about forever in an SE/30.