What is the value of a HP ProLiant ML370 G4 server?

Hi, I have at home a HP ProLiant ML370 G4 server that I bought in a garage sale at the beginning of the summer. It is in fully working condition with Debian 7.5 on it. Here are the specs: Year: approx 2004 CPU: 2 physical Intel Xeon 3.20Ghz CPU with Hyper-Threading, so the OS sees 4 cores Ram: 2gb, with many free memory slots Network: 2 server-grade EtherNet cards Graphic card: Ati Rage XL HDD: 3x Ultra320 SCSI 72.8gb 10000rpm, now in hardware RAID 0 Optical drive: DVD reader/burner: I replaced the original CD drive. Other: Tape backup drive, floppy drive, 3 USB 2.0, fully redundant fans, double power supply Weight: approx 90-100lbs This server is very fast, but I don't have much use for it. I'd like to know if it still has a money value, and how much would it still worth in production? I want to sell it, but I have no idea of what could be a fair/good price for it. Could it be useful for this project? Thank you for the info! -Alexandre