We need a chatteler with a certain expertise

Hi,

If this question is too much off topic, please delete it and I'll apologize later by email.

The question is:

Is there a chatteler who specializes in Fifth Wheel traveler trailers?

My parents want to trade their 1989 Alumalite travel trailer by Holiday Rambler in on a 1995 or 1996 32 foot Fifth Wheel with a rear living room and two slideouts.

Can anyone tell us how to find a source where my parents could get a fair deal?

Thanks in advance for any information.

Best,

-Boyd