I'm a 24 yr old male. How much does it cost for Breast Reduction? Is it dangerous?

I would estimate that this surgery costs about $5000  without insurance.  If you want insurance coverage, the doctor you see writes a letter and waits for the insurance company to approve it.  It is a safe surgery with small scars.  This condition, called gynecomastia, does not recur following surgery.

The cost off male breast reduction varies across the country and even in
the same area. Prices in South Florida are less than more expensive
cities such as Toronto, New York, or Los Angeles. We charge starting at
$3000 + MD Anesthesia related expenses for male breast reduction. Insurance
is unlikely to cover the costs of the surgery, but you should contact
your insurance company for the specifics of your plan. To
ensure the lowest possible costs and the highest possible quality,
consult with board certified plastic surgeon who owns his own nationally
accredited surgery center. Consult with 3 experienced and expert board certified plastic surgeons to understand your options and risks as they should be specific to your situation.