Welcome to the forum! There are many great members will to provide help at any time!
With regards to your question, RV Trader is a popular website to shop for and look at pre-owned RV's of all types. A quick search of the site only revealed three pre-owned Coachmen Freedom Express TT's for sale --> https://www.rvtrader.com/2016-2018-C...494&radius=any
The $14,500 asking price for the Coachmen that interests you looks reasonable.
Additionally, the RV USA website contains good info for many types of RV's and often includes a sales brochure --> https://www.rvusa.com/rv-guide/2017-...192rbs-tr31453
Also, you can always ask Mr. Google or Mr. Bing to search for a sales brochure for an RV and often times a sales brochure can be found. For the 2017 travel trailer that interests you, the Coachmen website has the sales brochure available. Floor plan and other details for the 192 RBS model are shown on pages 9 & 10 of the brochure --> https://www.coachmenrv.com/brochures...ssbrochure.pdf
Hope this info helps!