We are going to look at a 1988 23 foot hi-lo tomorrow. It appears to be in very good condition. How can I find a reasonable value. I have no idea what is a reasonable cost

I'm late but here is the buyer's checklist:

Basically, start with the visual items –
1. Exterior
• Look for water stains and discoloration on inside walls and around ceiling anywhere vents, skylights, windows, etc. exist.
• Push and prod with your hand on the inside walls for soft spots (which could indicate a water leak and a damaged or rotten interior wall).
• Check for bubbles in the wallpaper (a sign of delimitation or water intrusion)
2. Interior cleanliness of the unit-
• Look for water stains and discoloration on inside walls and around ceiling anywhere vents, skylights, windows, etc. exist.
• Push and prod with your hand on the inside walls for soft spots (which could indicate a water leak and a damaged or rotten interior wall).
• Check for bubbles in the wallpaper (a sign of delimitation or water intrusion)
3. Test appliance functions –
• lights
• fans
• refrigerator
• air conditioner
• heater
• water pump
• range hood
• stovetop
• oven (if equipped)
• microwave (if equipped)
• stereo (if equipped)
4. Lift System-
• Does the unit raise and lower properly
• Check the lift system for hydraulic leaks (puddle under the trailer)
• Check the lift cables to see if they are in good shape and not frayed
• Check the seal between the upper and lower body halves for tears or damage
5. fill the tanks to the top and check for leaks
6. Battery
7. Solar Panel (if equipped)


The NADA guide is a little high but will get you in the ballpark.

https://www.nadaguides.com/RVs/1988/Hi-Lo

__________________
"Ruben"
2404T, 2003 2500HD 4X4 GMC Sierra SLT Crew Cab w/Astro camper shell and 2003 Chevy Tahoe LE 4X2
Far West Texas

Thank you for this information