With all of that let me go out on a limb and suggest that the single most important aspect of collecting is condition. As in real estate the three most import aspects are location, location and location! In guns it is condition. Most every collector strives to find the best example of the category they are collecting. Next might be rarity; and rarity is not limited to the gun itself. Might be a very rare chambering in a not so rare gun. Or special features. But combine condition with rarity and you have the “holy grail”

So throughout my listings you might see two similar guns with one being significantly different in price. Why, aspects: condition and/or rarity