Estimate what a used item is worth from its new price, age and condition, or find the listing price that nets your target after selling fees.

Amounts in USD ($). Condition and demand weights are illustrative model assumptions; compare actual sold items.

Set to 20% a year as a typical assumption. Change it if items like yours lose value faster or slower.

Market adjustment and range
Blank means no adjustment. Must be greater than −100%.

Defaults to ±10%; an assumed band, not a confidence interval.

Used Item Price Formula

The calculator uses an illustrative compound-loss model to estimate resale value. Condition and demand weights are assumptions; recent comparable sales may give a better indication of an actual selling price.

Estimate = IP × (1 − D/100)age × condition factor × (1 + demand/100) × (1 + local adjustment/100).

  • Where UP is the Used Item Price ($)
  • IP is the original or current new comparison price in USD ($)
  • D is the annual percentage loss in remaining value

Apply annual compounding over the entered age, then the selected condition, demand and local-market multipliers. The range is an assumed percentage band, not a confidence interval. Listing mode instead uses (target proceeds + fixed fee + seller-paid shipping) / (1 − selling-fee percentage/100), with the listing price and percentage fee rounded up to whole USD cents. The fee is assumed to apply to the listing price only; other platform charges may differ.

How to Calculate Used Item Price?

Both examples below use one year of depreciation, Like new (100%) condition, neutral demand and no local adjustment. Under those assumptions, the compound model reduces to the single-year discount formula shown.

Example Problem #1:

  1. First, determine the initial price ($).
    1. The initial price ($) is given as 5,000.
  2. Next, determine the depreciation percentage (%).
    1. The depreciation percentage (%) is provided as 10.
  3. Finally, calculate the Used Item Price using the equation above: 

UP = IP - IP * D/100

The values given above are inserted into the equation below:

UP = 5000 - 5000 * 10/100 = 4,500.00 ($)

Example Problem #2: 

For this problem, the variables needed are provided below:

initial price ($) = 6,000

depreciation percentage (%) = 50

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer. 

UP = 6,000 − 6,000 × 50/100 = $3,000.00