Modelled index
RWN.ENR.0178.0±35 ptsRWN.AGR.0164.0±39 ptsRWN.INF.0161.0±42 ptsRWN.PRP.0183.0±33 ptsRWN.ENR.0259.0±47 ptsRWN.ENR.0346.0±44 ptsRWN.INF.0268.0±45 ptsRWN.AGR.0257.0±42 ptsRWN.AGR.0362.0±41 ptsRWN.INF.0344.0±44 ptsRWN.INF.0453.0±45 ptsRWN.INF.0566.0±41 ptsRWN.PRP.0261.0±41 ptsRWN.PRP.0363.0±42 ptsRWN.PRP.0448.0±43 ptsRWN.CRD.0171.0±40 ptsRWN.CRD.0258.0±43 ptsRWN.CRD.0388.0±22 ptsRWN.CMD.0179.0±35 ptsRWN.CMD.0239.0±46 ptsRWN.PRP.0546.0±26 ptsRWN.PRP.0640.0±26 ptsRWN.PRP.0754.0±26 ptsRWN.PRP.0858.0±26 ptsRWN.PRP.0954.0±26 ptsRWN.PRP.1048.0±26 ptsRWN.PRP.1148.0±26 ptsRWN.PRP.1240.0±26 ptsRWN.PRP.1340.0±26 ptsRWN.PRP.1448.0±26 ptsRWN.CRD.0464.0±26 ptsRWN.CRD.0548.0±26 ptsRWN.CRD.0640.0±26 ptsRWN.CRD.0754.0±26 ptsRWN.CRD.0840.0±26 ptsRWN.CRD.0958.0±26 ptsRWN.CRD.1058.0±26 ptsRWN.CRD.1134.0±26 ptsRWN.CRD.1258.0±26 ptsRWN.CRD.1348.0±26 ptsRWN.EQU.0148.0±26 ptsRWN.EQU.0234.0±26 ptsRWN.EQU.0348.0±26 ptsRWN.EQU.0434.0±26 ptsRWN.EQU.0540.0±26 ptsRWN.EQU.0634.0±26 ptsRWN.EQU.0740.0±26 ptsRWN.EQU.0840.0±26 ptsRWN.EQU.0948.0±26 ptsRWN.EQU.1048.0±26 ptsRWN.CMD.0358.0±26 ptsRWN.CMD.0448.0±26 ptsRWN.CMD.0534.0±26 ptsRWN.CMD.0640.0±26 ptsRWN.CMD.0734.0±26 ptsRWN.CMD.0840.0±26 ptsRWN.CMD.0934.0±26 ptsRWN.CMD.1048.0±26 ptsRWN.CMD.1140.0±26 ptsRWN.CMD.1234.0±26 ptsRWN.COL.0140.0±26 ptsRWN.COL.0248.0±26 ptsRWN.COL.0348.0±26 ptsRWN.COL.0458.0±26 ptsRWN.COL.0540.0±26 ptsRWN.COL.0640.0±26 ptsRWN.COL.0758.0±26 ptsRWN.COL.0848.0±26 ptsRWN.COL.0958.0±26 ptsRWN.COL.1040.0±26 ptsRWN.DIG.0140.0±26 ptsRWN.DIG.0258.0±26 ptsRWN.DIG.0334.0±26 ptsRWN.DIG.0434.0±26 ptsRWN.DIG.0534.0±26 ptsRWN.DIG.0634.0±26 ptsRWN.DIG.0734.0±26 ptsRWN.DIG.0840.0±26 ptsRWN.DIG.0934.0±26 ptsRWN.DIG.1034.0±26 ptsRWN.CUR.0158.0±26 ptsRWN.CUR.0258.0±26 ptsRWN.CUR.0348.0±26 ptsRWN.CUR.0448.0±26 ptsRWN.CUR.0558.0±26 ptsRWN.CUR.0648.0±26 ptsRWN.CUR.0748.0±26 ptsRWN.CUR.0858.0±26 ptsRWN.CUR.0948.0±26 ptsRWN.CUR.1040.0±26 ptsRWN.ENR.0178.0±35 ptsRWN.AGR.0164.0±39 ptsRWN.INF.0161.0±42 ptsRWN.PRP.0183.0±33 ptsRWN.ENR.0259.0±47 ptsRWN.ENR.0346.0±44 ptsRWN.INF.0268.0±45 ptsRWN.AGR.0257.0±42 ptsRWN.AGR.0362.0±41 ptsRWN.INF.0344.0±44 ptsRWN.INF.0453.0±45 ptsRWN.INF.0566.0±41 ptsRWN.PRP.0261.0±41 ptsRWN.PRP.0363.0±42 ptsRWN.PRP.0448.0±43 ptsRWN.CRD.0171.0±40 ptsRWN.CRD.0258.0±43 ptsRWN.CRD.0388.0±22 ptsRWN.CMD.0179.0±35 ptsRWN.CMD.0239.0±46 ptsRWN.PRP.0546.0±26 ptsRWN.PRP.0640.0±26 ptsRWN.PRP.0754.0±26 ptsRWN.PRP.0858.0±26 ptsRWN.PRP.0954.0±26 ptsRWN.PRP.1048.0±26 ptsRWN.PRP.1148.0±26 ptsRWN.PRP.1240.0±26 ptsRWN.PRP.1340.0±26 ptsRWN.PRP.1448.0±26 ptsRWN.CRD.0464.0±26 ptsRWN.CRD.0548.0±26 ptsRWN.CRD.0640.0±26 ptsRWN.CRD.0754.0±26 ptsRWN.CRD.0840.0±26 ptsRWN.CRD.0958.0±26 ptsRWN.CRD.1058.0±26 ptsRWN.CRD.1134.0±26 ptsRWN.CRD.1258.0±26 ptsRWN.CRD.1348.0±26 ptsRWN.EQU.0148.0±26 ptsRWN.EQU.0234.0±26 ptsRWN.EQU.0348.0±26 ptsRWN.EQU.0434.0±26 ptsRWN.EQU.0540.0±26 ptsRWN.EQU.0634.0±26 ptsRWN.EQU.0740.0±26 ptsRWN.EQU.0840.0±26 ptsRWN.EQU.0948.0±26 ptsRWN.EQU.1048.0±26 ptsRWN.CMD.0358.0±26 ptsRWN.CMD.0448.0±26 ptsRWN.CMD.0534.0±26 ptsRWN.CMD.0640.0±26 ptsRWN.CMD.0734.0±26 ptsRWN.CMD.0840.0±26 ptsRWN.CMD.0934.0±26 ptsRWN.CMD.1048.0±26 ptsRWN.CMD.1140.0±26 ptsRWN.CMD.1234.0±26 ptsRWN.COL.0140.0±26 ptsRWN.COL.0248.0±26 ptsRWN.COL.0348.0±26 ptsRWN.COL.0458.0±26 ptsRWN.COL.0540.0±26 ptsRWN.COL.0640.0±26 ptsRWN.COL.0758.0±26 ptsRWN.COL.0848.0±26 ptsRWN.COL.0958.0±26 ptsRWN.COL.1040.0±26 ptsRWN.DIG.0140.0±26 ptsRWN.DIG.0258.0±26 ptsRWN.DIG.0334.0±26 ptsRWN.DIG.0434.0±26 ptsRWN.DIG.0534.0±26 ptsRWN.DIG.0634.0±26 ptsRWN.DIG.0734.0±26 ptsRWN.DIG.0840.0±26 ptsRWN.DIG.0934.0±26 ptsRWN.DIG.1034.0±26 ptsRWN.CUR.0158.0±26 ptsRWN.CUR.0258.0±26 ptsRWN.CUR.0348.0±26 ptsRWN.CUR.0448.0±26 ptsRWN.CUR.0558.0±26 ptsRWN.CUR.0648.0±26 ptsRWN.CUR.0748.0±26 ptsRWN.CUR.0858.0±26 ptsRWN.CUR.0948.0±26 ptsRWN.CUR.1040.0±26 pts
Frontiers · Pre-Owned Assets · Market sizing
Size the opportunity. Keep the boundaries.
Build an explicit bottom-up estimate for one geography, category and year. Default inputs are invented examples; replace them with evidence.
Define your market
One geography, one category, one year. All inputs are assumptions in USD.
Illustrative annual transaction value · Modelled
$3,750,000
Scenario range: $2,812,500 – $4,687,500
Estimated asset stock
$30,000,000
Units in use × current value
Annual traded units
15,000
Units × share resold
Platform fee revenue
$375,000
GMV × take rate
Uncertainty band
±25%
User-defined range, not a confidence interval
Scope: Illustrative local electronics market · 2026
No source data connected · assumption-based estimate
Evidence before aggregation
| Measure | Evidence required | Common mistake |
|---|---|---|
| Asset stock | Installed units × current residual value | Using original retail prices |
| Annual transaction value | Completed transactions × realized prices | Counting unsold listings as sales |
| Market revenue | Fees and services earned | Calling gross merchandise value revenue |
| Cross-platform total | Deduplicated item and transaction identifiers | Counting one item listed on multiple sites repeatedly |
Stock is what is owned. Flow is what trades during a period. Never add these together — or add overlapping marketplace volumes — to produce a global market total.
Next: model one asset through acquisition, preparation, holding and exit.
Resale lab →