I thought I had learned my lesson.

I posted a Motorola 360 1st Gen Smartwatch in my local neighborhood group and then later posted it to Marketplace.
The confusing, weird, spammy and lowball messages started coming in even though I stated the $50 price is firm.
So, like most of the other things I have tried to sell on Facebook I failed to find the patience to locate a legit somewhat normal buyer.

eBay here I come! I should always sell there in the first place.