Yep, that's correct.
Pre Sholay days all/ most AB films were flops, so this must have been a flop too. Specially when it's heroine was not only a newcomer, but never heard of again. But, the film is very interesting. Much more than Cheeni Kum. I'm sure if this film released after AB became popular, it would have been a hit.
I saw it on Shemaroo DVD. Zulm.net has shots/ DVD review of its older Video Sound release
http://www.zulm.net/modules.php?op=modl ... e=&order=0Note that in DVD details, it's Lakshmi Chhaya credited as heroine and not Neeta Khayani who actually is the heroine, but never appeared in any other film or TV, to my knowledge (imdb).