Fred,
I can see putting up a range of pricing I.E a 1985 345 goes for 32 to 39K. But listing actual prices paid may cause trouble. Some will use it as inteneded, a guide. Others will think their trashed unit is worth the high end of the scale when it is not even worth the low end, as well as the other way around. I can see it as good reference for those wishing to get into an Airstream Motorhome, but I would be sure to post it as a reference not an absolute indicator of value. I did my research same as you, lots of eyeball time in front of the computer. just my $.02 worth