[Daithi]

Out of curriosity I went to Manybooks, which has word count and page size on their books, and found that you can easily estimate the page count based on the word count. Just round the word count to the nearest 10,000 then divide by a 1000 and multiply by 3 (easier than it sounds), and close enough for government work.

For example -- stats from Manybooks and Amazon:
Le Fanu's Carmilla -- 29,338 words (89 pages)
30 x 3 = 90 pages (106 on Amazon)

Shakespeare's Romeo and Juliet -- 25,904 words (79 pages)
26 * 3 = 78 pages (96 on Amazon)

Austen's Pride and Prejudice -- 121,763 words (350 pages)
120 x 3 = 360 (382 Amazon, first book I looked at was 480 Amazon)

Bram Stoker's Dracula -- 160,098 words (419 pages)
160 x 3 = 480 pages (528 Amazon)

Dicken's Great Expectations -- 185,258 words (520 pages)
190 x 3 = 570 pages (544 Amazon)

Tolstoy's War and Peace -- 562,579 words (1306 pages)
560 x 3 = 1680 (1456 Amazon)