Maybe they're saying there are 'no women currently in the band' and they'd like some......? But I suspect not, and I'd not bother either and probably report them too.
Think if I was dropping nearly £3k on a CS Bass I'd like a few more photos and relevant information about it?
https://www.ebay.co.uk/itm/165316679208?hash=item267da45628:g:H8gAAOSwCaJh~QjG
I reported too but is it not possible to speak to a real person at FB: would that carry more weight if it was someone who had actually been scammed themself?