With bobs it depends very much on the breeder, around $20-25 a bird is what I see mostly if you can find anyone who sells them in the first place. Buy'em at the spring and fall sales and you easily pair $80+ a pair for regular bobs. Last fall I have bid on a trio until it got to $175 then I quit, not worth it.
If your in the right area raising Coturnix lets you break even, where I am at I can't give'em away...... gotta drive them to the Sales that are 8-10 hrs away(one way) to get any money really. I rather just throw'em in my own freezer.
These prices are all CAN$ but the way the US$ stands right now it amounts to the same.