The Upsell Resistance Score is a CRM metric that predicts how likely a customer is to reject an upsell offer. By analyzing historical purchase behavior, engagement reluctance, and customer sentiment, AI-powered purchase resistance analysis helps businesses adjust upsell strategies accordingly. Customers with high resistance scores may require different messaging, better timing, or added incentives to increase conversion rates. By identifying upsell decline probability, businesses can enhance personalized sales outreach, ensuring higher acceptance rates.