Finn had been wandering the isles of WWW for a while now, and still couldn't manage to find what he was looking for. Maybe he was blind or something, or maybe his eyes just kept wandering to a pretty brunette who seemed to be interested in purchasing one of the pygmy puffs. Either way, the attention he probably should have been paying to where he was going was very much elsewhere.
So when George Weasley ran into him, he couldn't help but laugh. "Don't sweat it mate, I was a bit preoccupied myself." Looking around he then found George's eyes again. "Hey, you got any of that instant darkness powder left? Friggen love that stuff. I use it in pranks on my sister and I probably walked past it or something but I figure since you're right here!" Finn loved everything in this shop. After all, aside from his tinkering hobby with muggle technology his second biggest hobby was trouble making...