Check out this link if you're interested in such things. Kinda cool...
Krishna
Dell PowerEdge FX2s CTO Blade 4 Slot 2U Chassis 2x 2000W
$399.00
CISCO UCSB-B200-M5 UCS B200 M5 BLADE SERVER - CAN BUILD TO SPEC
$495.00
HP ProLiant BL460c Gen9 Blade 2x E5-2690v4 2.6GHz =28 Cores 32GB P246 650FLB
$223.00
DELL PowerEdge M630 Blade 2x E5-2680v4 2.4GHz =28 Cores 128GB H330 2x10Gb X520
$275.00
Dell PowerEdge M620 Blade Server 2 x Xeon e5 2665 8 x 16 GB(128) RAM - No HD
$59.99
HP ProLiant BL460c Gen9 Blade Server Intel Xeon E5-2698 v3 - 512GB RAM
$255.42
Sun Microsystems Blade 100 Workstation UltraSPARC-IIe 500MHz 256MB Server No HDD
$95.00
Dell PowerEdge M620 Blade Server 2x 10C E5-2690v2 64GB Ram 2x 600GB 10k HDD
$125.00
Dell PowerEdge FC430 Blade with 2 x Xeon 2680v3 CPUs
$120.00
HP ProLiant BL460c Gen9 Blade 2x E5-2660v4 2.0GHz =28 Cores 128GB P246 650FLB
$267.00