A HUO game doesn't have to be perfect. A game with 10 plays might have a really faded cab. A game with a beat shooter lane might have a great play field. A game with lock down bar holes might overall have a great cabinet.
There are tons of indicators that might mean one thing or another. By itself, HUO is meaningless. It's a piece of the puzzle when determining the condition of the game.
HUO by itself should do nothing for your expectations. Sunlight in a house can ruin a cab a lot more than a well taken care of game in a dark non smoking bar.
HUO is HOME USE ONLY. If your game was at a convention, a bar, a church, it is not HUO. This actually isn't debatable. If you think the game that you took to a convention, moved, and had played more in 3 days than it would have been played in 3 years is home use only please let us know so we know who not to buy games from.
Quoted from J_Striker:
When you purchase a pin that says huo and it is getting shipped you have high expectations for condition.