Used-Line Value (ULV)
The Used-Line Value (ULV) is based on the asking price for the item as appeared at Used-Line.com in past four years. The ULV is a rounded weighted mean of the median values of the items for each year:
Where
P is the Used-Line Value
P1i , P2i , P3i are various asking prices for year i
Median(P1i , P2i , P3i) is the median value for all asking prices for year i
Ci is a weighted coefficient (relative weight) for year i
The coefficients (relative weights) for last four years are summarized in the table:
| Year | Coefficient | Relative weight |
| Current year | C1 | 50% |
| Previous year | C2 | 30% |
| Previous year | C3 | 15% |
| Previous year | C4 | 5% |
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