With orders of $25 or more, Amazon offers the Darice 68-Piece Art Set, model no. 1103-22, for $4.99 with free shipping. (Walmart also has it for the same price with pickup.) That's the lowest total price we could find by $2. It features markers, pencils, pastels, watercolors and a 1" x 8" x 1.5" plastic carrying case.

Note that this item is part of Amazon's "Add-on program"; it can only be purchased with an order of $25 or more.