abe may have 4 or a dozen different prices for the same thing, each from a different dealer.
I found out the expensive way that it is good to search for the book by name.
Example--you look up key word "Kentucky Rifles" and find one book you want out of maybe 30 or 100 listed.
Next step is to repeat the search, but this time search for the specific title of that book.
This time there might be more choice of bookstores, hence prices, for that specific book.
May not entirely make sense but that's the way it is.
I don't know how any site could have better prices than abe, as they have so very many different dealers selling thru them.
I also use abaa.org, Antiquarian Book Dealers. More limited selection but sometimes a slightly different selection.