Easily. How is it written? Is the story descriptive? Does dialog control the story? Can you picture the story just by reading the first page? If not, drop it and move on. If you cannot picture the story, it is just going to sit on the shelf. The best stories are those you can imagine like a movie and have astounding characters.
My favorite authors ever were found in Borders. After reading the first page, I was interested, more than interested, I couldn't put it down. Book in hand, I raced down the steps trying not to trip over my own feet. My mother wouldn't wait long if I wasn't in my regular spot at the corner outside the double doors. It was one of the most impatient moments of my life. Now I'm a devoted fan of Jeaniene Frost, and adore her characters because they are my pocket friends. Sherrilyn Kenyon, Susan Johnson, Patricia Briggs, etc. They all were found that way.