Poilane loaves are really humungous! Did you see that the €28 one weighs 1.9K undecorated, and 2.3K with the inscription on? So with our paltry little 40g a day serving, it would last 2 months!
(But I have paid the full price when necessary - really good bread is can be as special as really a good cake or the best olive oil, and so it costs the same.)