For that guy in the video. I'd hate to guess how much he put into the plane...
I remember when I was a kid watching a guy with a big RC Stearman bi-plane. The thing must have had at least a 3 foot wingspan. Snoopy was the pilot and he had a bomb bay with working doors that he used to drop a parachuter out of. As the plane was going along, I heard him mumble "oh s@%!". His fingers were moving the control sticks all around but the plane wasn't responding. It nose dived into the ground from around 100 ft or so. The top wing blew off on impact and the nose of the plane was crushed clear up to the cockpit. He quietly walked over to his mangled plane, collected the parts and loaded everything into the back of his truck. He never said a thing as he drove away.
That would really hurt me to see that, because if if you race/drive/fly rc's we've all been in the same boat before. I wrecked on a road course before. It was the first warm day of spring and I wanted to drive really bad. I plugged my battery in and had couple of good laps around the local R.O.A.R. course. But all of a sudden my controller stopped responding and the car burnt out its tires and rocketed into turn one at full speed. It smashed into the wall and flipped over the barrier. I picked up the the wreckage the front arms, bumper, shock tower, half of the chasis, and servo were completely destroyed.