Reconstructed, salvaged, rebuilt, titles

In the 90's thru 2005 I use to buy and rebuild salvage vehicles. Here in Fl. there is a auction called Sadiso where wrecked,stolen recovered, donated, etc vehicles are auctioned. There really was no rhyme or reason as to which autos would be sold as "Rebuildable tittle" or "Salvage" or "Certificate of Destruction". I would see autos with very little damage be non rebuildable, and then you would see some mangled pile being sold as rebuildable? The insurance companies determined this and the mind set most times would be that they paid once on it as being totaled and they didn't want to ever pay on it again so they would deem them Salvage or COD. But they due sell way below what the value should be.