Left front tire wearing on inside

I assume I have negative camber, as my left front tire is wearing on the inside edge. I haven't taken it in for an alignment, because I know I'll be told _______ has to be replaced before an alignment can properly be performed. I'm just trying to get an idea of what will need to be replaced, so I can be financially prepared to have everything taken care of in one trip or two, if parts need ordered. Thanks! Heather