Need more power!
Spiro,
Ten minutes from a pack of 2400/2600 at a cost of about $40-45 is about right. However, if you buy 3 or 4 such packs and a charger (or even a pair of chargers) you can connect to your car's battery then after each 10 minutes you just put the next pack onto charge and fly the next pack in the sequence. You can do this ad infinitum (or until the battery discharges completely or the motor burns up from being run for too long!)
Cliff