OK, my prices were a little off, but maybe you can haggle them down =)
I got these prices at
www.islandco.com
Compaq Part Number SN-B3AAA-P1 Special Price $599
Pricing updated August 24 7:00am 2001
433Mhz CPU, 0MB Cache 21164 EV56 at 433Mhz
128MB Memory 10/100 Ethernet On Board,
S3Trio64 2MB 1.44Mb Floppy + 4x SCSI CDROM
Unix/Linux SCSI Ctr PCI*
2GB 7200rpm Disk SCSI Wide**
Generic keyboard VMS/Unix/Linux Generic 3 Button Mouse
Compaq Part Number SN-B3AAA-P1 Special Price $399
Pricing updated OCtober 17 3:19pm 2001
433Mhz CPU, 0MB Cache 21164 EV56 at 433Mhz
1.44Mb Floppy + IDE CDROM 10/100 Ethernet On Board,
The PWS line has a regular IDE controller on board and a 10/100 NIC, 64-bit PCI and 32-bit PCI slots, I think even 2 ISA slots. All the PWS should run NT and Linux fine, if you want to run Tru64 or OpenVMS you have to make sure you use a SCSI controller that's supported is used (QLogics are good) because I don't think either support IDE.
I got lucky and got a PWS600au for $600, I lost the eBay auction I bid on but the owner emailed me and asked me if I wanted a better one he had also for sale =)
Also remember that NT on Alpha is only 32-bit, so you need Linux, FreeBSD, VMS, Tru64, etc to actually have a 64-bit OS.