Okay, so, in my opinion when one is looking to purchase an aircraft, some things are important. Price of course, but VALUE is determined by all the other facts, some of which are obvious in photos. TTAF helps determine value, TSOH as well, but how many hours annually since the OH? Avionics are necessary, IFR? VFR?... how new or ancient? Value again. But... Probably for 90% + of aircraft that one might look at that would have any VALUE to a person who did not just want to bore holes in the sky and do pattern work, alone... I'd argue the most necessary specification for determining the PRACTICAL USEFULNESS of an aircraft would be W&B. This would apply to most everything from a 172 to a BO. What useful good is a plane that won't take you and the S.O., luggage, and maybe the family pet; more than 50 miles away without a fuel stop? Why, if you have decided to sell your aircraft and are paying to list it on line, would you not pre-qualify potential purchasers by providing a W&B and, maybe even a PAYLOAD number? If you're selling an old short body BO, or a Mooney, or a 172, heck... Anything with more than 2 seats... And someone is looking to buy a 3 or 4 or 6 or 7 seat aircraft must have a desire to either fill the majority of the seats with cheeks, or take the seats out and haul bales of... Well, whatever. Keep me from calling, emailing, or otherwise bothering you for something I can't use and won't be interested in because it won't fit my mission, but 3 or 4 others in the same category would. Save my time and yours... Post your W&B, or at least a payload with full fuel. Charlie Feeling curmudgeonly today.