Are they yellow? Are there any markings cast into the housings?
Here in Western Canada we have Princess Auto (started in Winnipeg), and they bring in all kinds of stuff from China, probably like Harbour Freight. They have the cheap grinders, drills, pipe benders, etc. I bought a 1/2" electric drill and it seems to work fine. Beats the heck out of using a 3/8 variable to spin a hole saw. Wondering if it's the same "brand". A friend bought a $29.00 1/2" hammer drill and burned it out pronto trying to use it for a job it wasn't meant for, drilling 1/2" holes in steel. I don't imagine it had enough gear reduction for that.
Ok, went to their site and I think I answered my own question. It looks like the same stuff, just a different color of plastic. My drill is their "Super Heavy Duty Industrial 1/2"". $39.00 on their site. They were $70.00 cdn at our retainer. Sounds about right. I think it's a not bad drill for occassional use. It certainly looks heavy duty and isn't too noisy either. So I think that speaks well to the quality of the motor and gearbox.