For a straightforward boob job the starting price in the USA is probably around $4000. But the price of first time breast implants depends on 4 things -
#1 the type of implants i.e. standard saline, adjustable saline (add $1000), silicone (add $700), or custom sizes ($ you don't wanna know!)
#2 the reputation, experience and credentials of the doctor doing the surgery i.e. plastic surgeon, ASPRS board certified (add $500), famous doctor to the 'stars' (add $1000 and up and up and up)
#3 the region of the country i.e. small city in the south, east or west coast (add $1000+), big city (add $500)
#4 the extra charges for medical facilities and support i.e. surgery in doctors office, clinic (add $500), hospital (add $800), separate anesthesiologist (add $500 and up)
This basically means that if a girl goes to a run of the mill plastic surgeon in a small city in the south to get standard saline implants put in at the doctor's office the cost will be somewhere around $4000. But if a girl goes to Manhattan to get adjustable saline implants by a famous surgeon with a separate anesthesiologist using a clinic facility the cost will probably be $8500 +