Add disease to that list.
Had a friend get a little Ratsnake last Oct at a show, it passed away in Dec from crypto (necropsy). Since he has lost 3 more, and now has all his collection separated and individualy quarantined. He's so frustrated and discouraged that his entire collection might be infected he can't replace any, he can't even give away his remaining collection.
Ibd can take even longer to show up.
For me quarantine and purchase comes down to several factors, but I won't do rescues or Craigslist animals, I will only get my animals from established reputable breeders.