📖 Overview

Compare two grocery options by true per-unit value instead of package sticker price.

Option B can be adjusted for spoilage quality loss or expected waste.

The calculator returns winner, spread percentage, and savings per 100 units.

It is useful for recurring pantry purchases where small differences compound over time.

🧪 Example Scenarios

Use these default and higher-pressure example inputs to explore how sensitive this calculator is before using your real numbers.

InputBase CaseHigher Pressure Case
Option A Price ($)8.9910.79
Option A Size (units)2427.6
Option B Price ($)12.4914.99
Option B Size (units)4046
Option B Adjustment (%)56

⚙️ How It Works

This calculator applies a direct math model based on the inputs above.

💡This calculator is scenario-based. Better input quality leads to better decision quality.

Quick Reference

InputExample Value
Option A Price ($)8.99
Option A Size (units)24
Option B Price ($)12.49
Option B Size (units)40
Option B Adjustment (%)5

When To Use This

  • Use this tool when you need a fast decision during active planning or execution.
  • Use this before committing money, time, or tradeoffs that are hard to reverse.
  • Use this to compare options using the same assumptions across scenarios.

Edge Cases To Watch

  • Results can be misleading if key inputs are missing, stale, or unrealistic.
  • Very small or very large values may amplify rounding effects and interpretation risk.
  • If assumptions change mid-decision, recalculate before acting.

Practical Tips

💡 Validate units before comparing scenarios.
💡 Run multiple values to understand sensitivity.
💡 Use outputs as estimates, not guarantees.

Frequently Asked Questions

❓ Is this output exact?

It is a fast estimate based on provided inputs and model assumptions.

❓ Can I compare different scenarios?

Yes, this tool is designed for quick side-by-side checks.