Hi Shraboni. You can go packages offered by Tripoto.Attached with my comments below are packages offered by Tripoto for hassle free traveling. Please take a look, fill the form and someone will get in touch with you. Thanks!
I recently completed the trip and i must say that there are loads of travel option. private taxi costs around 12000-14000 lkr. There are share taxis as well. No need to look for anything else There are private transport options from Ella to Arugam bay as well just for 2000 lkr.