What's my chance of one day learning in the Glenn Gould school of the RCM?

[sv3nno]

It's complicated to explain to you the Estonian education system so that you could understand what i mean... but basically, in 3 years i'll be completing high school (grades 10-12 - and my music school has an additional studying year - grade 13). I'm 16 years old now, and so i'd be finishing when i'm 20 years old.
Is 20 years old a good age to apply there? and how much does it cost to study there?
those are the only things i need to know, cause i'm already aware that RCM is a very high-standard school, but i'm one of the best pianists in my age group at my current school (which is also a high-standard school) so with alot of hard work i'd be able to make it.
thanks, i'm waiting for your answers for my above questions