Not daft at all.   On the first day of the general sale (3 June) my estimate from the first dot count was sales of 10,595.  The club also announced "more than 10,500" so the count seemed to be in step.   However, on 7 June, the club announced 11,500, but my dot count suggested sales of 11,275, so 225 fewer.   There are probably several reasons why the count seems out of step, e.g. the club includes sales of  wheelchair/carer spaces and hospitality STs in their count