Pre-sale works only locally. So if you are not in Canada, unfortunately I can't really help.
However, if you walk in into local BB shop any of the Sales Associates would be happy to help you out.
Typically the Brooks Buys (two suits for $X) are not available during the semi-annual sale.
Now is the best time to purchase Peal shoes (25% off plus 15% kicker). I think the confusion is in part due to how BB communicated the prices to the SA's. My SA has been doing this for 20 plus years and said the communication was so confusing he still wasn't sure what the discounts were but suspected we would see the usual discounts.