Would like to buy tickets for Rush in LAS Vegas on june 24th. Not from vegas so not sure where, who, or how?

So I would really love to attend the show at MGM on June 24th. Looked at their website and I guess they don't handle ticket sales directly. So after an intense search. wound up more frustrated then when I started. Many places claim to have tickets from the reasonable to the WOW!!! I'm worried I'll get scalped way bad or worse lose my credit card info and the money. PLEASE HELP