Furminator Small

FURminators If all the same?

I take my dog from the abuser. While waiting to pay I saw a commercial about the FURminator. The barber offered by the brush $ 30 to $ small, 35 for half. When I got home, I looked on Amazon and realized that the Furminators Amazon sells for as little as $ 4.70. They do differ to the hairdressers. Furminators If all the same? Does the seller is allowed to advertise the imitation, as a "Furminator" in the description? Some not have an image of the broach in its packaging, only the brush itself.

My sister bought one at a groomer for $ 39. I picked up at a Walgreens by $ 19 and came with a bottle of enzymes to help clean, deodorize. Both seem to work the same, but that came from the abuser was aesthetically more attractive, and the handle was more comfortable. Both are the same size