OweWhat - Offer Calculator

OweWhat is a purpose-built offer calculation tool for people who buy, sell, and trade goods.

Designed to replace manual calculation steps in buyback and resale workflows, OweWhat helps you total item values and immediately see offer amounts—such as trade and cash—based on your preferred percentages. No retyping totals, no repeating calculations, and no extra steps.

As you add values, offer amounts update automatically. Adjust percentages at any time with a single tap and keep key numbers clearly visible throughout the conversation, so you can focus on the deal instead of the math.

• Reduce slow, drawn-out negotiations
• Avoid calculation mistakes
• Build trust through transparency

OweWhat is especially useful in fast-paced environments where offers are made repeatedly and delays can cost you a deal.

Originally built for trading card vendors, OweWhat is just as effective for anyone sourcing inventory directly from individuals across resale, trade-in, and second-hand markets.