I think Sri Lanka is like 6 vacations in 1! We were in the jungle, mountains, hills, agricultural, ancient ruins, and now on a Safari that made me feel like we were at a game park in Africa.
Our fantastic guide/driver told us before we planned the trip that this Yala National Park would be the place to go! He was right, we all loved it, and were glad we went economically the rest of the time so we could go there. It amounted to $207 total for all 7 of us to go, and it was the splurge of the trip (beside Perahera... Another story) so that gives you an idea about how frugal you can be in Sri Lanka while having a stellar time!