Depends sa book. If tagalog pocketbooks, 1-2 hours lang. If Fiction Novels usually 1-3 days (depende rin kung interesting yung plot). If non-fiction like self-help books, etc. months usually ang inaabot (di kasi ako mahilig dito).
It took me 3 loooooonnng years to finish Les Miserables by Victor Hugo. 2,000 plus pages kasi tapos e-book pa. Masyadong masakit sa mata basahin ng tuluy-tuloy.