I just got the Normcore one. Its a copy of Decent’s shorter one. Black alu with magnets, and sits on the outside of the basket. I use a dosing cup, so don’t need a taller funnel, its just to hold in any stray grounds during wdt.
It holds well but with the rounded edge of the VST basket, and the flat surface of the funnel a few grounds do get between them, but nothing measurable and easy to wipe off. I was lucky and got it for £9 on ebay. not sure about the $29 they charge new, although obviously a lot less than Decent charge!