oddworld

hi guys, I have been playing around on traktor for a while but i need hardware if i am going to progress any further. I was looking at getting a set of cdj 850s and a mixer but they are just too expensive. if i go out and buy a traktor cotroller such as this one https://www.storedj.com.au/products/NI-KNTRLS4 will i be able to go to a club and (reasonably easily) be able to just pick it up and go if they are using cdj's? also, is it worth picking up second hand decks? Cheers, Sean