With a whopping total of ONE posting on this forum (and its the
for sale listing above), you are trying to reach someone who is not active. I hate when people cross post their
for sale trailer all over, then sell it and never close out some of the postings. Can be very frustrating for buyers.
If I were King, I would require sellers to check back in weekly with a "yes its still for sale" or similar or the ads would be closed. Some forums I am on require active participation before you can post items
for sale, including membership at a small fee.
I have used the location to check to see if it is listed elsewhere (FB marketplace and Craigslist). Often, sellers are more attentive there.
Of course, maybe you will here back from the seller in short order.
Best of luck in your search!