Are money-back guarantees useful for abandoned cart recovery?

As a Shopify store owner in the competitive fashion accessories space, I've been wrestling with cart abandonment for months. Our traffic is solid—we're spending decent money on Meta ads—but something breaks down right before purchase. I've tried traditional tactics like exit-intent popups and abandoned cart emails, but conversion rates remain stubbornly low. Recently, I started wondering if a money-back guarantee might be the psychological nudge customers need to complete their purchase. The hesitation seems less about our product quality and more about perceived risk. Customers want reassurance. They're thinking, 'What if this doesn't look exactly like the picture?' or 'What if it doesn't fit or meet my expectations?' These micro-moments of doubt are killing our sales. We're not selling $5 trinkets—our average order value is around $75, so customers want genuine confidence before pulling out their credit card. I'm looking for a sophisticated approach that doesn't just scream 'discount' but genuinely addresses customer uncertainty. A money-back guarantee feels like it could be that trust-building mechanism, but I want to implement it strategically—not just slap a generic promise on the site that might actually increase return rates or administrative overhead.