They are definitely cheaper. Thats why I like them. My only complaint is that the hole on the rim is too small for fitting on american hubs, so you have to use a body reamer or a 5/32 drill bit to get the wheel onto the TC3, XXXs, etc.
Other than that, theyre great. The combo of the multi (45/48) front and 40 rear, in 28 mm, is killer for carpet, even though the multi costs a bit more.