Bought the car about a year and a half ago from DTBLS1; string running ca, I just never drive it. Put less than 1500 miles in in 18 months, I know what I paid for it but am having no bites locally on it for that same price. Here are the specs:

2000 Camaro SS #3437
55,250 miles
Exterior is a 9.5/10
Interior is a 9/10
Engine:
Speedinc SI5 cam (231/237 .589/.595 112 LSA)
FAST 36lb injectors
FAST 92mm intake
Nick Williams 92mm TB
FTP 102mm lid
Chris1313 ram air kit
Meziere elect WP
TSP 1-7/8" headers
TSP True Duals that dump at the rear-end
Poly motor mounts
Brand new Optima Red top batt.
Tuned by Jim Moran @ Speedinc. The car makes 420rwhp/390rwtq and has run 10.91@126
Tran:
T56 built by SixSpeedInc
MGW Shifter
McLeod RST twin disk clutch
Tick Performance adj. Master Cylinder
PST 3.5" aluminum D/S
Poly trans mount
Rear axle:
Moser 9"
Spool w/4:30s
35 spline axles
Suspension:
UMI K-member
UMI adj lower A-arms
UMI Torque Arm with Tranny crossmember relocation
UMI adj. rear control arms with
relocation brackets
UMI boxed subframe connectors
UMI adj. panhard bar
UMI adj rear drag sway bar
Strange front double adj. coil overs
Strange rear single adj. shocks
Brakes:
Drilled/Slotted rotors
Hawk pads
Red powder coated stock calipers
SJM ABS delete
SMJ line-lock kit
Interior:
Momo Tek R steering wheel
6LE Leather Racing seats with custom mounts
Raptor shift light installed behind AC vent
Rear seat deletes
Airbags deleted
HVAC deleted, have AC components to put it back in if needed/wanted.
Exterior:
VFN 3" "SS Style" cowl hood
Stainless SS badges
Wheels:
15x4 Billet Specialties Streetlites with Mickey Thompson 26x6-15 Sportsman S/R radials
15x10 Billet Specialties Streetlites with Mickey Thompson 28x10.5 ET Streets, less than 100 miles on them!

 

It's quite simple. Your car appeals to a very limited buyer's market.
Who mostly wants your beautifully built car?? Young guys. Who has no money to buy cars? Young guys.
That's the problem once you modify, you eliminate many buyers who worry about abuse or just want 'stock'. Most guys love to mod cars but you do get hurt at selling time. That's life. There are exceptions (you bought the car) so keep trying, especially next Spring. Car sales really diminish during the holiday season.