Love Books? Find best deal. longish post.
Once you have selected the search terms hit enter and wait. A numer of editions might popup - unless you used the ISBN of the one you really want, not necessary in most cases.
From the few possible edition results, pick one, the system will display a screen full of results.
Including price with Shipping included, if you enabled that, in your currency choice, for new and Used books alike.
A screnshot, I cropped it to half width to keep size manageable - and I am usually looking for more affordable used copies too.
Prices show are in Canadian dollars, shipped to Canada, for a Hardcover edition.
Used books normally have some kind of condition description on their listing.
Almost new. Good Condition. Acceptable, etc, with the price going down for less desirable copies.
Love Books? Find best deal. longish post.
You can reproduce that search result with this link: https://www.bookfinder.com/search/?ac=sl&st=sl&ref=bf_s2_a1_t1_1&qi=pSWvPizpR3S51sWhI8N7Ao7zY1M_1497963026_1:2:2&bq=author%3Dneal%2520stephenson%26title%3Dcryptonomicon&ps=tp
...and from there, can even change the Currency or destination if you like.
Good luck, happy shopping, get your books before the Christmas rush and clogged mail systems!