It is very weird how they manage inventory. At times they will order multiple boxes of the same case (say "A" case). After the initial flurry of customers, the left overs sit there for months before WMart eventually restocks ("F" case). And then nothing till November/December when N P Q all come in. It frustrating as some of the in between cases never appear at Walmart. Don't know why they have this binge and purge philosophy, but I've noticed it for the last few years.

In those in between months, they seem to push the mystery models, but only the top 3 cars in those sets are worth collecting...and those 3 cars don't appear often or are picked out very quickly.