"Cheap" microfiber towels can ruin alot of hard work that you put into a prepping a car. Why risk it?
If you are spending the time in trying to make your car look great, you should spend the money in buying quality microfiber towels.
That said, I think Scottwax does sometimes use the Vroom -brand towels from Target. And as stated above, WASH THE TOWELS BEFORE YOU USE THEM!..
Accumulator's suggestion of the "CD Wipe Test" is a good one to test any towel you might want to use on your vehicle's paint.
Also, towels don't last forever. Good towels, when properly cared for, will work for a while, but after several washes, they do loose their "grabbing" chraracteristics.
Lastly, a common sense suggestion: If you drop a towel on the ground, use a different one. Lesser detailers (AKA "hacks") will pick them up, shake them out, and continue using them. Not a good idea. That grabby nap picks up dirt and debris that shaking and sometimes washing will not cause to come out and then gets transferred as swirls into the surface you are wiping.