As one of its daily deals, B&H Photo Video offers the Lowepro DroneGuard Kit for $19.95 with free shipping. That's $5 under our June mention and the lowest price we've seen. (It's the best deal now by around $30.) This kit, designed for X-configuration quadcopters, features a detachable battery box with dividers, a rigid tray, and removable hook-and-loop dividers.