This item is for QTY4:

Dell PowerEdge OEM R300 R900 R905 T300 T605 2950 2900 3.5" SAS SATA HARD DRIVE CADDIES.

One price is for 4 trays with screws.

 THIS CADDY FITS R300 R900 R905 T300 T605 2900 2950 SERVERS 

We will warranty for 30 days. 

Shipping is $9.95 within the US.