I think it's just a mistake in the title.

From what I understand, they are selling this (working) dryer. Their washer is broken and they want a new washer/dryer set since they're often sold together.

Clearly a dryer, so a well-intentioned idiot.

Nah, the price is a bit high for an unknown level of care given to the appliance, but they're selling a working dryer from a matched set where the washer no longer works.

For the right person, this could easily generate some profits.
$100 for the board, $100 for the Rotor, $100 for the Stator, $100 for the RPS, and you've paid for it. Anything past that (panels, door parts, drum, inlet valve, etc) is bonus.

If they're selling the dryer pictured, get them to toss in the washer for free.