Hallo…
I’m really new to this and honestly have no idea how to figure out the value of things like travel trailers or mobile homes. With cars or houses, it’s easy because you can get them appraised, but for this stuff, I’m totally lost. Most of the owners I’ve talked to don’t know the value either. 
Is there a legit way to figure it out, or do people just throw out a number that sounds good? Any tips or advice would be awesome!
Your advise is most welcome…
Websites like RV Trader and RV Blue Books offer tools to assess the worth of your RV or mobile home based on current market data1
For used RVs and mobile homes, the National Automobile Dealers Association (NADA) offers values. 
This data is available on their website or via channels such as
Mobile home and RV 
dealerships in your area can offer evaluations based on their knowledge of the market and past performance.
Examine the prices of comparable models by perusing ads on websites such as Craigslist, eBay Motors, and local classified ads. 
Professional Appraisals: To ensure a more precise appraisal, think about working with a professional appraiser who can offer a thorough assessment based on a number of variables such as age, condition, and market demand 