Amazon offers the Magformers 112-Piece Challenger Set for $76.59. With free shipping, that's $16 under our mention from a month ago and the lowest price we've seen. (It's the best deal now by around $19.) It includes 48 triangles, 46 squares, four hexagons, 12 pentagons, and two wheels.

Also available is the Magformers 144-Piece Smart Set for $99 with free shipping. That's $34 under last month's mention and the lowest price we could find now by $47. It includes 46 triangles, 44 squares, 12 pentagona, six rectangles, four hexagons, six isosceles triangles, four super triangles, six super squares, and 16 accessories.