agreed. HUO is a pointless term unless the machine has always been home use only.
reminds me of my friend who purchased a collectible figure from ebay and the seller had listed it as MISB. when he received the item, it was obviously not new so he contacted the seller. the seller's response was that MISB meant "mint in(side) box" LMAO!
btw, I've got a HUO lawnmover for sale. it's been recently shopped out (eg. hosed off and the blades sharpened 3 seasons ago), so it's practically NIB!