I did something similar when selling an item on craigslist. I was having trouble with lowballers and flakes, so I relisted the item but gave it a weirdly specific price. Something like $347. Maybe it was dumb luck, but I had a buyer come pick it up a few hours later and they didn't try to negotiate down the price at all.

Could've just been a coincidence. But it did get their attention, for sure, because after they gave me the money, they asked why I was so specific on the price. Got an appreciative chuckle when I told them the truth.