Where are you located?
Every second shop in Lamington Road stocks it, and it's available at most music and professional audio (band party wallas) shops in every city. Heck, it was available in Calcutta 5 years back.
Bajaao.com also has 'em, for shipping to back of beyond places. 4.5K, not a bad price for the '57.
Quick heads-up, I noticed Amarbir has started stocking Rode mics. The NT-1A is a killer mic for its price class, and their entry level condensors are pretty good for vocals. I know Bajaao carries Samson mics, but mics that cheap usually end up sounding cheap too.