Those look nice Steve. Midwest Products are out of stock right now so some of the vendors are breaking up the 12 packs and selling them apiece for an inflated price.
The Local Craft Store carries Midwest Products, I never saw "12 Packs" The store has a set of shelves, with dividers with the different size wood products, but individual pieces. So, would go and grab an assortment of pieces, depending on what project I was working on, like cutting Track Ties, or need wood for scratchbuilding. I have several cardboard tubes under my bench work with an assortment of basswood and some balsa. Also, the flat 3" wide sheets. So, when I get an idea for a project, I got some inventory to look through.