Pricing can vary a lot depending on surgeon, surgeon location, procedure, etc. You can find pricing from various surgeons here to get a ballpark idea:
http://www.topsurgery.net/costs/
Regardless of what price quotes you wind up getting, top surgery is expensive and loads of trans men have a hard time paying for it. You mentioned that you're a student. Have you looked closely at your student health plan to see if top surgery is covered?
You can find more information about U.S. insurance here:
http://www.topsurgery.net/costs/ftm-top-...verage.htm
And you can find lists of surgery financing companies and surgery grants here:
http://www.topsurgery.net/costs/top-surg...ancing.htm
I hope this helps!