This set typically sells for $15-$20, but just dropped well below my $8 price alert. Looks like this set is getting cleared out since it's now discontinued. Good reviews, and by far the cheapest it has ever been, according to CCC. Free shipping with Prime through several third-party sellers at this price. Buy a couple!
Update: Looks like the seller I bought from has now sold out, and the other sellers have now switched to Add-On instead of regular Prime. Probably only a few left.
Update: Sold out now, hope a few people got in on it.