This 2024 updated study from Baymard uncovered 1,000+ UX issues across 219 usability test sessions, distilled into 160+ guidelines. The data is striking: sites with mediocre product list usability see 67-90% abandonment, while optimized sites achieve just 17-33%—a potential 4x increase in leads.

34% of sites have poor filtering that makes narrowing results nearly impossible. 15% don't allow multiple filter selections, forcing tedious page reloads. 32% fail to show applied filters overview. These are fixable issues with massive ROI potential.

Sites with mediocre product list usability saw abandonment rates of 67-90%, whereas sites with just a slightly optimized toolset saw only 17-33% abandonments—as much as a 4-fold increase in leads.