And if this is a ransom based kidnapping, it is clearly not the express pros. I suspect that true pro's operate just like you titled it- "express":Express Kidnappings target individuals that are known to simply be able to pay the ransom.
Day One: Family gets the ransom note, proof of life, money transfer instructions, deadly ominous warning about going to the police.
The ransom sum is professionally tailored. Large enough to to reward the criminals. Not so large that it is hard to raise, or the victims need to liquify assets, which takes time. Better to demand less money and get out fast.
What, day four or five?: The money is sent, victim is released, and the criminals are looking for another express victim.