Can someone please explain or direct me to the explanation of the "Hand Picked Barrel" phenomena that merchants enjoy with distilleries? Is a hand picked barrel special? It seems like a gimmick to show that a store/merchant/buyer/manager has a unique relationship with a bourbon company.

Am I paying more for a single barrel product that was hand picked (i.e. does an ETL that was picked by a big box liquor store mean anything)? Are they benefiting from having hard to find stuff, selecting the barrel, and then bumping the price because of it?

Thanks in advance.