If your inexperienced or just don't have the proper tools, it's gonna cost you around $150-$225 per axle (cheaper for one boot, more for both). If it's the rear, get it done profesionally....I imagine your not an expert seein that your posting this question so don't mess around or it's gonna waste your time. an axle replaced will cost you much more. It's like $400 -$700 to have the entire thing replaced. And it won't take a long time to bend that bish....