How much does it cost to replace lugs?

the lugs ans studs u can buy threw auto parts store a good hammer torch and some anger will fix it now fir the body damage not sure how bad but u may be able to beat it back. you may have to buy a new rotor witch comes with the studs atatched then all u have to do is get the lugs. now why did your wheel fall off one lugs were to loose or to tight