Then go to a nicer hall near you and try them there. It'd be like buying a pen you were going to write a novel with, but having never used one before... buying one off the net becase someone else said they were good. Some people like fat pens, some like skinny, some like wood, some metal, some plastic. The same applies - moreso - to cues. The thread wrapping them can be rough or smooth, the shafts can flex more or less, the weight can be centered well or not.
Even if you're going to buy on the net, try the MODEL you're interested in, in person.