Odoo POS system offers a free one-app plan that gives US businesses full point of sale functionality including inventory management, customer tracking, and sales reporting without monthly costs. The Odoo point of sale software on this plan works for single stores needing core features. For multi-location operations, eCommerce integration, or advanced reporting, paid plans start around $24 per user monthly. US retailers appreciate this flexibility, you can run the free version as long as it meets your needs and only pay when you require additional capabilities as your business grows.