Pricing plans vary. Some providers will let you use their software for free and charge you per transaction, while others will give you fixed monthly subscriptions. These can be anywhere from $20 to $200, depending on the number of features and services you want. Experts suggest that the cost of a POS system for restaurants should never exceed 3-4% of the total annual revenue of the business. So make sure you pick the one that’s suitable for your size and budget. Different restaurant POS systems can fulfill different needs.