It doesn't matter. We don't have the revenue stream Leeds have. For that matter Leeds don't have the revenue stream Burnley have, hence Wood going there. Modern football.
They will have to pay Swansea top dollar now that he has played a good few first team games in the Premiership, has maintained a good scoring record in the Championship and has a couple of Scottish caps to his name. £10 million? £15 million? I would wager that Swansea will want that sort of fee.