Ranphykx via Amazon offers its Ranphykx 65-Piece Magnetic Building Blocks Set for $22.99. Coupon code "NYYXHE97" drops it to $17.24. With free shipping for Prime members, that's $2 under our April mention and the lowest we've seen. (It's the best today by $9.) It features 65 magnetic pieces made from ABS food grade plastic. Deal ends August 23.