now I know it boils down to pg_relation_size at the end of the day,
cos that's what psql uses. But please tell me guys, that I am not the
only one who would expect true size of table in \dt+ ?
At the end of the day, postgresql 'cheats' behind scenes with toast,
and avid user shouldn't really need to account for that!.
Btw, pgAdmin is able to display that information properly.