In the real world, the low end prices are high. Fairly decent examples can be had for much less than what NADA shows. On the other end, selling the car will require patience as few will want to pay that price, a fallout of the lower end real world prices. Current as of 1 Jun 2013.

  Low Medium High
1986 Omni GLHS $4,150 $7,150 $15,700
1987 Charger GLHS $5,875 $9,850 $20,000
1987 CSX $3,650 $6,375 $13,400
1987 Shelby Lancer $3,850 $6,900 $14,150
1988 CSX-T $2,225 $3,625 $7,750
1989 CSX VNT* $5,600 $9,200 $17,100
1989 Shelby Dakota $5,175 $8,000 $15,500