I saw a Tento 7x35 for sale for $43 a few years ago:
http://www.astromart.com/classifieds/details.asp?classified_id=461099
If the optics can be saved, it would probably cost you more than $43 to get the fungus removed.
Unless you are mechanically inclined and can take the bins apart to clean the fungus (I did on the objective of a 6" refractor once, using ROR cleaner, and it worked), and then put it back together w/out ruining the collimation (or know how to collimate binoculars), I think you will have to live with the fungus as long as it doesn't significantly interfere with the view.
Not sure how humid it gets in Ahmedabad, India. Right now, the weather map shows the humidity is 38% and 73* F with smoke (was there a forest fire?), with a high of 93* F today! Would you like me to send you some snow to cool off? I have
plenty to spare.
If it's 93* F in the beginning of March, what is it like in July?!!! And you aren't even in the southern part of the country. Yikes.
Maybe this forecast is incorrect:
http://www.wunderground.com/global/stations/42647.html
It rarely goes below 40% humidity here at any time of year, and the humidity is usually around 70-80% when its 93* F.
But if you get monsoons and high humidity at times, you will eventually need to purchase waterproof and fog proof binoculars.
Not sure what your budget is, but I highly recommend the Zen Ray 7x36 ED2 - $375 new.
If you need a budget WP bin, try the Nikon 7x35 EX if that's the configuration you like. $100 over here, not sure what Nikon charges for this bin in India.
In the meantime, stick your bins in a tightly sealed box with desiccant to sop up the humidity when it's not in use.
Good Luck!