They are more forgiving with husbandry. You can almost keep them at room temperature if your place is warm enough.

I haven't seen a corn snake for more than $150, but that was an adult. Most corns are under $100 including different morphs. I got a black motley from BHB at the White Plains show in February for $25. There is a new morph out called the Palmetto; it ranges from $2,000-$10,000. There are a few corn experts on here, hopefully they chime in as my knowledge is limited.