Yes, money for anything in a library is hard to come by right now.
Our library puts all adult fiction together - they used to be separated but it is a hard call to make - for example, is it mystery, suspense, a novel, or all three, or if set in the old West, a western, or maybe romantic suspense? As a stack browser, I appreciate having them all together (the better for serendipity?). The regular paperbacks are separated into Westerns, mysteries, romance, Sci-Fi. And then there is the large print section. And never enough room - so yes, those rotating shelves would be nice - The bottom shelf is hard to reach, the top shelf doesn't work with my bifocals....