what keith said bakers, pre 1910 are the most sought after. i do have several, the earliest edition i have is from 1908, although used, in very good condition, it has the owners name and location written in fountain pen on the inside cover. pretty cool. some notes or marked pages, but just adds to the value for me of the original keep who owned it.
i think i paid 30 or 35 for it? less than 50 bucks, but probably would have paid 50 because of the year and condition. not sure the 1945 is worth the 30?, but that is an individual decision and what you value it at and will pay for it. these old books will have discoloration, scuffs, wear and tear of some sort going on, pages coming loose or separated binding. it's fun to see these old editions, and read them, and wonder about the keep who owned them.