I have received the reflectors and can confirm that they really do exist. They are large. About the same diameter as my Olight SR-90 reflector but also taller. I placed the reflector onto the LED board in my SR-90 to compare beams. (with centering ring removed) The LED sits flush with the opening of the reflector. The beam it makes is not as laser-like as the SR-90 reflector. It makes a larger corona but it's very smooth and even. There are some burrs on the reflector edges but they should not affect function. I do not have experience comparing reflectors but overall for a $6 reflector I think it's pretty good.
It is raining outside right now so I cannot get outdoor comparisons, though I did take it outside and shined it at a barn about 400 feet (122 meters) away and it reached it well with a large area illuminated. I'll have to get pics tomorrow, weather permitting.
SR-90 ceiling shot:
Illumination Machines 5* SST-90 Reflector:
Ceiling shots taken with the SR-90 sitting on the floor. The SR-90 stock reflector does have artifacts on a white wall at this close of a range, but outdoors they are not able to be seen.
EDIT:
Ok, here's the outdoor beamshots:
SR-90 with stock reflector:
Olight SR-90 with Illumination Machines 5* reflector mounted:
(Ignore the dark on the right side. My thumb was probably in the way.)
As you can see, it makes a nice even beam, but it is not putting as much light down range as the Olight SR-90 reflector. I am thinking that the IM reflector may be able to perform better than what my pictures show if it were able to be better focused, but it could simply be less reflective than the SR-90 reflector. I am not able to put the SST-90 in my Olight SR-90 into the IM reflector very far. It possibly needs to be inside the reflector a short distance for optimal focus. The beam shots are probably indicative of the performance you would get if sitting flush on a CST-90 board at 9 amps. I plan on trying this with a CSM-360 shortly, as well as several reflectors from DX, and some Ledil bridgelux reflectors. I might have to do a reflector roundup sometime....