Food retailer seeks merchandise management system with POS system

I am looking for a merchandise management system with a POS system for my small retail store (organic food and cosmetics), which is currently in the process of being set up.

The software should meet the following requirements:

• Cash register system
• Inventory management
• Supplier management
• Accounting
• Optional scale function (calculate tare weight, as customers bring their own containers) or interface to a scale
• Optional provision of cash register hardware

The software should be cost-effective - both in terms of purchase price and follow-up costs.

One software workstation is planned.