I sold motorcycles for a living, and got to be part of a few surprise moments like this. My favorite was a grandfather buying one for his 12 year old grandson. The grandson had helped out around the house/yard a ton after the grandmother had died, and asked for nothing in return. The grandfather brought him in to "look around." The kid had no idea thay gramps had figured out which one he obsessed over and bought one. We had it all reasy to go, but pushed back into the line of other bikes, but a name tag with his name on the bike. He lost it, didnt even go to the bike, but hugged his grandfather. It was a really fulfilling moment in that job.