its like $70 at tire kingdom
or you can pay $150 or somthing and get a 3 year alignment plan at TK... that's probably your best bang for a buck so you can go get a "free" alignment every time you change a suspension part, smack a curb, etc.
Btw from what you were saying the problem is most likely the tires needing to be balanced. On both my s14 and my max when ive had that vibration problem, they both went away the second i drove off with new tires