As far as many people are concerned, the Guna Caves is a restricted one. But as u guys know that Money can do wonders in these kind of things, it is possible to see.
Me along with 6 of my friends went on a trip to Kodaikannal 6 months ago and we were insisting to the cab driver to take us to caves, but he ws giving lame excuses. But finally he came out and asked us to pay 3000 and finally took us there for 1500 Rupees. So it usually depends on the Drivers and the way we speak to them.