For its newsletter subscribers only, newegg offers the TP-LINK AV Nano Powerline Adapter Starter Kit, model no. TL-PA4010KIT, for $49.99. Coupon code "EMCYTZT3656" cuts it to $39.99. With free shipping, that's $5 under our April mention and is the lowest total price we could find by $10. These adapters allow you to create a network using your home's existing electrical wiring and feature speeds up to 500Mbps. Deal ends June 23.