Each of the games from Uncharted: The Nathan Drake Collection will be available individually from November 16th.
Uncharted 1, 2 and 3, all of which were remastered for the collection last year, will be available individually in Europe, although seemingly not in other territories for the time being.
No price for the remasters was given, although at this stage it may just be worth buying the collection itself if you want to play more than one of the games, as prices have dropped significantly.
The original three Uncharted games are considered to be some of the best of the last generation, and by all accounts the remasters for The Nathan Drake Collection were pretty great as well. If you have yet to play them it is certainly worth a look.