Where to get Chevrolet Malibu 2006 2.2L 4-cyl ball joints - OEM or replacements? ?

[Negotiator]

The price quoted by my mechanic is ridiculously high (like $350 for the part only, no labour). Where should I look for fair pricing for the parts? Are there any quality aftermarket replacements worth looking at? Are there any other car makes and models that have interchangeable ball joints with Malibu?

Much preferred to be found in GTA or nearby.

Thanks.