What would you recommand buying to start DJing ?

Some of my friends are mixing techno house dnb etc and I was thinking i'd like to try it myself (i'd like to mix minimal techno, trance and old school dubstep) but I don't have tons of money. I'm looking for like a small controller I could plug to my computer, link to traktor (I could find a version of it I guess) and just make some transitions from an mp3 track to another. I heard cheap controller showed some latency -which is not ok at all for a dj set.
Does anyone know what would be a good choice for me here ?



PS : sorry if my english is hard to understand here, that's not my native language and i'm tired, but i could rephrase it if necessary

 

Native Instruments probably makes something good. (They also programmed Traktor)

Not sure, but Line6 may make something... I love their equipment.

 

what would be a minimum budget to have in mind ? Is something below 150-200 euros (200-260$ according to google) realistic ?