One thing you should be aware of though, is that turntables are not cheap. and most people who use DJ equipment will need to buy more than just one. because you will want at least two turntables in order to mix and master all the different types of music. It will also be good to make sure that you get an iPod to listen to the music on and to take with you when you perform so that you can easily transfer the files to your laptop or CD player.
For those of us who do not want to buy as much gear as some DJs do, there are many options that you can consider for your DJ mixers. One option that you may want to consider is to buy a used one. If the DJ that you currently own has a used one that is not functioning properly, then you might be able to find a used one for a lower price than what you would get from buying a new one. This way, you can get a new one and not have to spend as much money in the process.
Another option you have if you do not have a lot of money to spend is to build your own. There are many websites that sell DJ mixers that do not require any type of investment. If you build your own mixer, make sure to use quality products that will last a long time and that are easy to clean and maintain.