OP didn't mention how long the previous owner had it. In this case, not long, but imagine paying for a .io domain, which used to be > $100/yr, for 10 or more ye

OP didn't mention how long the previous owner had it. In this case, not long, but imagine paying for a .io domain, which used to be > $100/yr, for 10 or more years and then someone comes along complaining that they can't have it for $100. Does it really matter why they were "squatting"? How many of us register a domain, with the best intentions, for an idea we never get to and then won't let it go for less than the sunk cost + the opportunity cost?.