Yes! Convenience is definitely worth an extra cost! I just ordered another batch of books online, and I can definitely say it's less hassle to do so than looking for it in an actual bookstore. I already tried that before, but usually it ends up that the books I'm looking for aren't there. Bookshops are really far from our place, so I guess the shipping fee is pretty much the same as the fare I have to pay if ever I go to a physical bookshop. So yeah, I really agree with you about the convenience it brings.