Forget the idea...
the sooner the better
coz theres no use regreting the fact tht nothing suites ur budget n even if it does its not worth it.
if u wann it for transferring files then use cd writers ;
if u wann it for playing games then tell him to bring his pc next to u every weekend;
if u want it for sahring ur internet connection then pay separetely for your ISP which is always less than ur budget