The September 14 Idol Chatter post explains in an update:
the EPs were limited editions designed to sell through before the Idol acts released their full albums. "The objective was to have virtually no inventory on these EPs by the time we released their debut albums," I was told. "The decay we saw this week, and will see in the weeks to follow, was natural and expected based on limited inventory in the U.S. Walmart locations." So if you were thinking about getting one of these EPs, better get it now, because they're not going to get any easier to find.
I will have to see if I have any numbers worth actually posting next Wednesday, but it has been a fun 12 weeks watching the sales of these EP's. Soon in October I will be able to track Scotty and Lauren's REAL album sales. Now that will be even more interesting.
As for singles downloads both "I Love You This Big" and "The Trouble With Girls" dropped in the number of downloads this week to be about 12,000 each (24,000 combined). "Like My Mother Does" also dropped to 5,000 this week. It is amazing how well ILYTB keeps selling but disappointing that TTWG is not taking off more (as well as not getting more airplay.) Once Scotty returns from the Phillipines and does more promotion hopefully things will pick up going into the album release. I do wonder, however, how many people will download the single with the album so close to being released.