These are hunting decoys, and the parts included in the kit are: cork body block, bottom board, head, eyes, keel, and lead ballast. The cork is cut to the side and top body outlines, and the slot for the tail insert is cut as well. Your job is to glue (or epoxy) on the bottom board and tail insert and then shape the body, and of course carve the head cutout. Then you can finish your decoy as a Black Duck or a Mallard–same anatomy, different paint scheme. If you would rather display yours, leave off the ballast keel. A plan and instructions are included. Why do these cost more than the Bluebills? It's a much larger duck, so requires considerably more cork...and the plan alone is worth the $10.
The photo above is of a simply painted Black. For hunting purposes, you don't even need to detail the head. The burnt umber crown and eye channel stripes are sufficient to attract other ducks.
Of course, you can paint your cork to look like this if you are so inclined. To attract ducks, anatomy is of primary importance. Deks finished like this are intended to attract onlookers. Either way the base coats are the same. The body and the head stripes are burnt umber darkened with black, and the head is white with just a touch of burnt umber. The speculum is purple on a Black Duck and blue with a white edge on a Mallard. The bill is yellow oxide warmed with a bit of red. Bill color varies with the season, by the way. The one above would be as seen during Summer and then in the Fall hunting season. During Winter and Spring the bills are greenish-yellow, and quite drab in comparison.
One of the best ways to get started making decoys is with a kit. We don't sell kits for all sorts of birds, just a select few to get a beginner headed in the right direction. To really get a beginning carver headed in the right direction, you'll want to order the kit(s) together with Basic Decoy Carving.