that's a pretty good price though, in my opinion... mine came for i think the same price and it had a cable but no stand at all, let alone a boom stand...
for recording, a sm57 usually isn't the best choice (however, their are always exceptions) for vocals... but sm57's are commonly used by serious studios on lots of things (guitar cabs and snare drums most commonly i think)... they may not be the best of everything, but i can vouch that a sm57 is a great tool when miking a guitar cab