Dry ice is nice to keep it frozen (if already frozen) on the long trips back.
As mentioned, be careful with it. Put the coolers in the truck bed or a trailer. Inside something like a Tahoe or Suburban you could get overtaken with carbon dioxide.
I too like to read a lot. I don't post a bunch but visit daily.
So, because one does not post lots they should be prohibited from the classifieds unless they drop $50?