Best Buy via eBay offers the open-box Insignia Qi Mini Wireless Charging Mat, model no. NS-MWPC1W, for $13.99. Opt for free in-store pickup to dodge the $5.49 shipping fee. That's $4 less than buying a factory-sealed version. It charges compatible Samsung Galaxy smartphones and other Qi-compatible devices, and features a blue LED to indicate charging status. A 1-year Insingnia warranty applies.