01/19/2014 at 05:00 PM EST
comes off as gruff on his TV show, Pawn Stars
, but he showed a sweeter, softer side of his personality in a note he wrote to a young fan.
Harrison, 48, who runs the Gold & Silver Pawn Shop in Las Vegas, got a fan letter from a young boy with autism and he was so touched by the note that he responded.
The boy's mom, who goes by the screen name MrsLeslie, posted Harrison's letter on Reddit
, explaining, "Little J is a huge fan of the TV show, Pawn Stars
and he talks about the show incessantly. I encouraged him to write them a letter, which he did, and he offered to sell his Game Boy to them for $30."
MrsLeslie added a cover letter to her son's note, describing her son and his condition, and said that while she didn't expect them to actually buy his Game Boy, she asked if they could at least reply. "They went above and beyond," she writes.
In his response to Little J, Harrison wrote, "Enclosed is $30.00 for the cost of the Nintendo Game Boy. I'm donating the Game Boy back to you for being such a loyal viewer, so keep enjoying it and think of us when you play with it."
The he added, "Chumlee [one of the pawn shop's employees] says thank you, because he already has one and you were right, he does like it. You have a wonderful Mom who loves you very much. You are a lucky Boy. Always pay attention to what she tells you."