I have a WD Green 1.5TB Internal Hard Drive for sale. It works perfect. It was part of my Drobo setup for it's whole life. Never really moved around. It is about 4 years old.
Here is a link for more info:
Western Digital WD Green WD15EARS 1.5TB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive - Newegg.com