What's the average cart value of abandoned vs completed purchases?

As a Shopify store owner in the fashion accessories space, cart abandonment has been my silent revenue killer. Every month, I see thousands of dollars slip through the cracks. My analytics show that while my traffic is solid and product pages get decent engagement, something breaks down between product view and checkout completion. I've noticed visitors add items to their cart, but then mysteriously disappear. What's frustrating is that these abandoned carts seem to have higher average values compared to completed purchases. It's like potential high-value customers are window shopping but never converting. I'm spending significant ad budget driving traffic, and watching these potentially lucrative transactions evaporate is incredibly painful. I need to understand not just the raw numbers, but the psychology behind why customers are leaving and how I can strategically re-engage them. Is it pricing? Shipping costs? Lack of urgency? Or am I not providing the right nudge at the right moment? Understanding the delta between abandoned and completed cart values could be the key to unlocking a massive revenue optimization strategy for my store.