HANDS DOWN CHEAPEST..

Northeast Aviation.. Robbinsville, NJ (1/2 hour from NYC)

Piper Warrior --- $72 wet... and then $20 for the instructor

Block time available too... so if you know you are going to def do all of your training with them, you may be able to negotiate the first 40 hours (required mins) for somewhere around $2500 for the airplane...

PM me if you want more info