Wow, do I feel lucky. Based on my experience, Uncle Tim and Iowa Dave hit the point exactly. Even though it was before the pandemic, I was on line when "my" 19 came up late in the evening about a year ago. I called the seller immediately, made an appointment to look at the trailer which was about 300 miles away. Looking back, I am amazed that the seller was willing to hold the trailer.
We looked, bought it trailer on the spot! Seller had a list of people wanting the trailer if we didn't follow through. Good fortune with timing, good fortune with a very considerate seller.
I hope you are as fortunate!