These falls are not natural and it is not easy to get to the top. We arrived about 3.30 in the afternoon and paid £13.00 each after which we were told the gates would close in an hour and it would be a close call as to whether we could see all of the falls. They were right - we didn't make it all the way to the top and felt particularly cheated. Other walks are not signposted out of the visitor centre so we felt we had just wasted the £26.00 it had cost us, £30 had we not been pensioners.
If you had a day there, may be it is worth the money but I am sure there are many just as good walks that can be had for free in the Dartmoor area.