600-700 for a snake, I really can't honestly share my opinions on that as this place is full of snake lovers.
All I will say is Supply vs. Demand...and the supply is far greater than the demand, meaning that the buyer sets their budget and then finds a supplier that for whatever reason accepts the offer.
Just like when I bought my car and saved $8000, I just emailed every dealership within 100km and said "Cash buyer, Best price as of Aug 1st wins"
Cash is king.
Breeders often need $$$ for rent, food (both human and animal), hydro...