Snap Circuits Jr. SC-100 for $19.70. Shipping is free on orders over $25. If needed, use this Filler Tool to pad the order to qualify for free shipping. Here is a screenshot for your reference. Alternatively, it is available at Walmart for $22.54 with free in-store pickup. The set contains more than 30 Snap-Together parts to build more than 100 projects, include burglar alarm, doorbell and others. Most places have it for over $30.