[The Pod]

Don't have a link, but 2 years ago, I picked up a whole bunch of 12VDC and 110VAC relays up at a local surplus store for .50 cents each.

 

[Gorey]

I just ordered in 500 pcs 12vdc to 110/240vac/28vdc and they should arrive in about 2 weeks. Very nice compact mechanical SPST NO .
Price should be about .75 each, with better pricing in multiples.

• Contact form: 1a, 1b, 1c
• Rated load: 10A 240VAC/28VDC,10A 125VAC/28VDC,7A 240VAC/28VDC
• Contact resistance: <=100m (ohm)
• Electrical life: 100,000
• Mechanical life: 10,000,000
• Coil rated voltage: 12VDC
• Coil power: 0.36W, 0.45W
• Coil pick-up voltage: <=75%
• Coil drop-out voltage: >=10%
• Ambient temperature: -25 degrees Celsius to +70 degrees Celsius
• Coil and contacts:1500VAC/min
• Contact and contacts: 1000VAC/min
• Insulation resistance: >=100M (ohm)
• Mounting form: PCB
• Weight (g): 10 per unit
• Outline dimensions (mm): 19.0x 15.5 x 15.0

 

[Calloween]

I went to radioshack yesterday and they were selling them for 10 dallors.