Best Buy offers the Netgear Spengler Unite Express 4G LTE No-Contract Mobile Hotspot for AT&T, model no. AC779S, for $29.99. Opt for in-store pickup to dodge the $5.49 shipping fee. That's $6 under our mention from two weeks ago, the lowest total price we've seen, and the best deal now by $10. It supports up to 10 devices and features a 1.77" LCD display, pre-installed SIM card, and 10-hour battery life.