What does -105 for the game mean in NBA betting?

When a sportsbook lists the price for betting on a point spread or other full-game wager at -105, then the bettor will be asked to lay $105 to win $100 (a $205 return on a win) or similar ratio on a given bet. This price offering is nearly as inexpensive as it gets in sports betting when it comes to traditional pre-game spreads and point totals.