Arsenal women played three games last year at the Emirates. Prices started from about £7. The minimum attendance for any of their games was 3,238. The highest was 47,367. The average 17,501.
West Ham average attendance 1524. It would appear though a seeming hotbed at Arsenal, it has yet to catch on at West Ham.
Of the twelve teams in the list I am looking at, only Arsenal and Manchester United averaged five figure attendances.
By comparison, you cannot turn up and buy a match day ticket for the men's games. If you are not a season ticket holder, you join one of the Club Schemes, for an annual fee of course, and are then entered into a ballot.
Me personally? Yes, I will be watching the final tomorrow. Would I pay to watch the final? No. Would I pay to watch a womens game? No.