If you're a competitive player, you're going to be spending vastly more money to travel and enter tournaments than you will on some DLC, and unless you're in like the top 5-10% of your region or intentionally only enter weak tournaments you can win, you're going to end up very negative financially, far far far more than you spent on the game if you enter tournaments with any regularity. If you have the money to burn on tournaments, you can certainly afford to throw some extra bucks on DLC to get that practice for tournaments.