OK, 7 days have now passed since the end of the free promotion. I have added the stats for Day 7 to the table:
As you can see, it seems the sales swell is now declining. I have received a little over 50 sales in the last 24 hours – half of what I received during the first 24 hours, and even less of the peak days (2-4).
Total sales are 869, with 31 refunds (3.8%)