Determining the optimal price per play for a machine involves balancing profitability and customer satisfaction. Key factors include:

1. Cost of Operation: Calculate maintenance, electricity, and other overhead costs to ensure the price covers expenses while leaving room for profit.

2. Customer Demographics: Understand your target audience's spending habits and willingness to pay. Younger crowds might prefer lower prices, while premium experiences can justify higher rates.

3. Competitor Pricing: Analyze nearby or similar venues to stay competitive without undervaluing your offering.

4. Game Popularity and Duration: High-demand or longer-play games can command higher prices, while shorter or less popular games may need lower rates to attract players.

5. Revenue Goals: Set prices based on desired profit margins, considering both short-term gains and long-term customer retention.

By evaluating these factors, businesses can optimize pricing to maximize revenue while keeping players engaged and satisfied.