Got a set of this stuff with the "Train" (Newqida) Christmas set I bought late last year (mentioned the loco on the "What battery R/C locos" thread). The track works ok indoors in a toy train set context, although I don't think the joiners will stand up to a lot of aggressive connecting/disconnecting.
It's similar to the plastic track you get with other brands of battery set, but NOT identical to the black track I got with a really cheap set a few years ago - the two brands won't connect. The points in my set needed a little fettling to close smoothly, but they do work. The lever mechanism is very similar to the LGB lever.
I only paid half the price for my set that this seller is asking for a complete set.