Amazon offers the Tekton 135-Piece Ratchet Screwdriver Electronic Repair and Security Bit Set for $29.83 with free shipping. (Walmart charges the same via in-store pickup.) That's the lowest price we could find by $6, although we saw it for $8 less on Prime Day. This kit is specifically designed for repairing mobile phones, tablets, laptops, computers, game systems, wristwatches, and eyeglasses.