A life alert necklace usually costs between ₹1,500 and ₹15,000+, depending on brand, features like fall detection or GPS, and whether it includes professional monitoring. Affordable options without monitoring can still provide reliable emergency alerts to family members. Choosing a one-time device saves money upfront, while a monthly subscription offers 24/7 professional monitoring and faster response, which is often better for seniors living alone or with higher safety needs.