Welcome to the tank Mr.Cool,
That was my very first betta 'tank' - its made from a company in china that repackages it for other stores, like Petcetera in Canada.
The tank is 2.5 gallons, its not a bad setup for a betta, you will need to get more rocks than they provide for gravel.
The plastic rock is a little plain, but the plants will not tear his fins. In Canada, that tank is about $20.00 CAN or $14.00 USD about.
The filter is not great, I prefer the suction-cup style bubble filters. But again, it will do for a betta.
However, for a little more, the mini-bow is a better setup. Betta's like horizontal space over vertical (wider is better than taller), and the minibow is a better quality tank.
Budget $45.00 for a minibow tank, fish and 25w heater and that should cover if for a while.