A retail chain operates multiple stores across different locations. Each store incurs fixed costs of $50,000 per month and variable costs of $15 per unit sold. The selling price per unit varies across stores and ranges from $30 to $50. Using Cost-Volume-Profit (CVP) analysis, determine the breakeven point for each store in terms of both units sold and sales revenue generated. Discuss the implications of breakeven analysis results for store performance evaluation and management decision-making.