Okay. You will kill me...
...but I was in the thrift store today and I found the exact same vacuum we are talking about for $4. $4!!! It was in very good cosmetic. Quite a bit nicer than the one I gave to my brother, but not as nice as the minty one I found, of course.
When I turned it on all the buttons worked but the brush roll was dead. I'm no dummy, though (I think), so I pressed the little reset button on the brushroll and, walla!, we have brushroll! It was missing the turbo brush, but all the other attachments were there.
The only glitch was that the dirt sensor would not budge from red. Whether there was some obstruction blocking the light, or it was just dirt, or the sensor was broken I don't know. I'm sure it would have been easy to find out, but I had to steel myself and walk away. I have no more room for vacuums, what with everyone wondering why I have so many anyway. Add to that the fact that I never get around to using the one I already have. I had to convince myself I didn't need it. Still, it was a great deal for someone to check out and fix up.
One thing I worry about though is the longevity of those control buttons. They are the kind of buttons that are arranged in a line on a small printed circuit panel, which are then covered by a thin plastic membrane with raised bumps where the buttons are. Like the ones you sometimes see on microwave ovens. The one I gave to my brother was worn through the membrane on the "stop" button so that you cannot see the lettering, just the red color. The vac I saw today showed signs that the membrane was about to crack on one of the buttons and was soft on another. The buttons still work, but will be impossible to tell which button is which once the words crack off and fall away. That style of button is inexpensive to produce, but is not durable.
I did check the brushroll on the $4 vac. It had only 2 strips, as you described.