Being a pro gamer is not a cheap thing to achieve. There is plenty of equipment to purchase and it is not the cheapest, but also not too expensive. You are getting your moneys worth for what you pay for. In my detailed post I mentioned gaming equipment, I am going to go into more detail on the different equipment a pro gamer should have. First things first is a controller. Now you can use just a standard controller or you can use what most pros use and that is a Scuf controller. You can either buy a Scuf controller and add some customization to it our you can mail in your own controller and customize it and have it mailed back to you. By customization I mean adding a skin design to the controller, adding grip, changing the kind controller stick, and or adding paddles. Now the skin design is just what covers the base of the controller, so instead of having a plain black controller you could have a red and black controller. It just makes the controller look cooler. The grip is just so you have a better grip on your controller, so it does not slip out of your hands.
There a two kinds of controller sticks you can use; concave and domed. Concave is where the center of the stick is caved in and the domed is where the stick is in the shape a dome. They do not necessarily make you play better, it is just your preference for what you would want to use. The paddles are designed for button mapping. By this I mean having the paddle replace a button so you do not have to use that button.
These go on the back of the controller. For example let's say that the A button is used to jump, when customizing the controller paddles you can assign one the paddles the A button. So instead of always having to press A to jump you can just push the paddle instead. Now the paddles can be assigned to any button you want, just do what fits your style of play. You can have up to four paddles, which means you can have four buttons remapped for the paddles.
The next thing you will want to get is a gaming headset. The top two companies are Turtle Beach and Astro Gaming. These headsets allow you to hear game audio and chat audio in the headset. It is up to you to figure out what levels you want each audio at. Each person has their own preference but majority of the pro players use Astro gaming. Also, each person will say that one is better than the other based on what headset they have. I have had a Turtle Beach headset before but now have an Astro Gaming headset. I personally think Atros are better because they are designed better, and I think they have better quality.
You want to have one of these brands because they will help you in-game. It will help you hear things at a distance and it helps you hear people coming up behind you. Do some research, look at reviews, and talk to your friends about them and buy what you think is best. The last main thing you will need is a monitor. There are a lot of companies who make monitors, just like headsets each person has their own preference of what brand they use. Major League Gaming uses BenQ monitors. They even have a specific monitor that is used by the pros at events. You can find these by just Googling them. These have the best quality and the lowest lag response time. The picture is so clear, colorful, and is nice because there is no lag which means everything that happens, happens in real time with no delay. Another thing that I would recommend is a recording a device to record your gameplays. You can get an El Gato or and Hauppague HDPVR.
These are the only two that I know of, but I am sure there are more. Before purchasing one these make sure your computer or laptop reaches and or exceeds the specifications of the device. These are not necessary to be a pro gamer, but it is nice to record your gameplays and makes videos out of them and post them to YouTube. Basically every pro player makes YouTube videos from their games. You can get fans to watch and subscribe to your YouTube channel. This is not necessity but it is a nice thing to have to show to others. These are the products that players in general and pro players use. I highly recommend looking into all of these. Theses would be an investment, a one time purchase that would last a very long time. I hope that these help you guys out. Happy gaming.