Is the discount airfare website "The Best Travel Store" a web scam?

The website a href="https://www.bt-store.com/" rel="nofollow"https://www.bt-store.com//a has listed prices on airfare that are half of the price of ANYWHERE I look. A flight which I am looking for from Buffalo, NY (BUF) to Osaka, Japan (KIX) is $750 on this site and $1300 everywhere else. And I've found that it is a company inside the US unlike foriegn scammers from Asia. Thanks for the help.