TiLiMayor
Veteran
QJ is the cheapest I can find. $5.58 on FastTech.
If you're looking just to learn skewb, get it, but I won't be that good in case you want to get practicing.. I bought mine looking for the cheapest as well and it's not that fast, pops a lot, has tough springs for the bearings, it's awful.. Get a lanlan, it's the most widely used, I know it will replace my qj..