Woot offers Melissa & Doug Wooden Jigsaw Puzzles in a Box 2-Pack for $9.63 (reg. $13.76) free shipping with Amazon Prime. 

Product Description: 
This incredible puzzle set includes two sturdy wooden boxes that each store four 12-piece themed jigsaws in separate compartments – that’s a total of eight wooden jigsaw puzzles! Pets includes a fish, a dog, a cat and a bird, and Vehicles includes a race car, a train, a fire engine, and a school bus. Each puzzle piece is shape-coded on the back for easy sorting. The slide-on box lids double as a convenient puzzle board, so these are great for travel. Puzzle play encourages fine-motor and problem-solving skills.