Quoting donkeylips:
They are often listed for about $50 front and $50 rear or about $100 for the full set. I guess it depends on if you're including the front knuckle(must not be from FWD) with good bearings. You can also include the rear trailing arms for ease of installation but you wouldn't want to ship them.
The information in bold is not correct.
Iceman did some research and determined the fwd knuckles have a more favorable outer tie rod location that will minimise bumpsteer for vehicles that will be running on lowered suspension.