My star screener is a Gyru. Can't remember what I paid for it, but much, much cheaper than a Remu. I got it through Exac-one (
https://www.exac-one.co.uk/gyru-star/) It is good and will screen topsoil well, as long as you are not too fussy. as the stars flex it will suck through slightly larger stones than spec especially if you are trying to get every bit of soil out of the bucket. It is belt drive and I have broken one of the belts when it jammed up. Probably operator error as you have to be very careful to stop scooping as soon as the material gets to the stars otherwise you can't get them started spinning. I would have thought you would need to do a lot of screening to make the numbers add up.