At that price I'd say it's an easy yes, as long as you can deal with the old AD&D 2e rules and the simple presentation by modern standards. There's lots of content and their reputation as classics are well earned. You should know that these two games actually have some big differences between them. So if the BG1 doesn't quite work for you, I'd still recommend trying BG2. BG1 is almost an open world game. Most of the world is open to you at the start and there's a big emphasis on exploration. The story is relegated mostly to the background. The story is interesting once it all comes together, it's just not the focus of the game. BG2 is a more linear and tightly crafted experience, with a much greater emphasis on the story. Your companions in particular are a much bigger deal than the first game.
Playing on a controller has some pluses and minuses. The game was designed to work with mouse and keyboard, so getting it to work on a controller requires a fairly complicated ui. There's a bit of a learning curve to it, but once you get it perfected, I found it works with the controller almost as well as the original mouse and keyboard. On the plus side, you can directly control your party's movement with the left analog stick outside of combat. When doing this your party snaps to their positions in formation, speeding up significantly if they get blocked by terrain. This actually solves some to the bad pathfinding problems in the game. This feature alone makes me prefer it to the mouse and keyboard.
Don't hesitate to lower the difficulty if you find it overly difficult. These games can be pretty hard at first. You can easily die to the first enemy encounter on core rules difficulty, and it remains difficult until you really understand all the systems and options available to you. I recommend pausing often in this game, it really plays best if you treat it more like a turned based system. Trying to play it in real time is almost impossible, unless you lower the difficulty to the lowest setting.
