I'm actually surprised you've had issues selling at that price..
Although something I started doing on Facebook Marketplace, a lot of times when I sell a vehicle I go DEEP into the description.
I pretend I am selling vehicles to my grandma, and word the description in a way that "non-Jeep" people can understand.
A short-pointed description such as a general listing of aftermarket parts doesn't do well for a lot of people who may otherwise be interested.
There is a LOT of interest from non-car people who read listings.
Currently, the listing is almost aimed at the 4x4/Jeep community, with little information that a 'normal' person would understand.
Throw some time into describing it well, so that people can get a well-rounded idea of the vehicle.
Some 'boring' stuff along the lines of:
does it drive well, how does it handle, does it burn oil, any leaks, any vibrations, etc.
You might be surprised at how much more interaction it gets.
My last TJ sold to a guy who had absolutely no idea what any of the parts were.
I stood in the driveway with him for an hour explaining the ZJ conversion, SYE, etc.
In the end, he understood what he was purchasing, and was excited to make the deal.
Short descriptions will catch the attention of Jeep/Offroad people.
Long 'boring' descriptions will catch the attention of the other 80%...