Related to the topic, I always try to reach the seller directly, once found a Japanese seller on IG, from the "contact" links on their website, sent messages to 2 accounts, no replies and not read, it was a really rare watch, a must buy for me, ended up not buying it after I realised the seller was very rough on Chrono24, his asking price was way over customs limits and no matter what alternative I suggested, he turned down, it sold for a lot less than my offers months later
Similarly, found an Indonesian seller on Instagram, the profile is a small watch related profile, sent a message to again buy a watch I really want and will pay way over market value, no reply and not read ...
My point? Sometimes even just being present on Instagram and checking the messages could lead to sales 😀