1999 Cadillac Deville Resale Values
| Mileage | Trade-In-Value | Retail Value |
| Clean | Average | Rough | Excellent | Clean | Average | Rough |
| 1 - 50,000 | $6,437 | $4,887 | $2,090 | N/A | $8,675 | $6,667 | $3,633 |
| 50,001 - 60,000 | $6,337 | $4,787 | $2,090 | N/A | $8,575 | $6,567 | $3,633 |
| 60,001 - 70,000 | $6,237 | $4,687 | $2,090 | N/A | $8,475 | $6,467 | $3,633 |
| 70,001 - 85,000 | $6,137 | $4,587 | $2,090 | N/A | $8,375 | $6,367 | $3,633 |
| 85,001 - 100,000 | $6,037 | $4,487 | $2,090 | N/A | $8,275 | $6,267 | $3,633 |
| 100,001 - 115,000 | $5,562 | $4,387 | $2,090 | N/A | $7,800 | $6,167 | $3,633 |
| 115,001 - 130,000 | $4,912 | $3,912 | $2,090 | N/A | $7,150 | $5,692 | $3,633 |
| 130,001 - 150,000 | $4,237 | $3,262 | $2,090 | N/A | $6,475 | $5,042 | $3,633 |
| 150,001 - 170,000 | $3,437 | $2,537 | $1,440 | N/A | $5,675 | $4,317 | $2,983 |
| 170,001 - 999,999 | $2,712 | $1,737 | $715 | N/A | $4,950 | $3,517 | $2,258 |
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