Looks like Knock have revamped the aergrind. The price has sadly gone up a bit too (not surprising, the old version was quite a bargain)
I’ve had good service making my daily filter with my original version for the last 5 years. It hasn’t really missed a beat.
New version has different burrs, new lid, better bearing alignment, screw off grounds catcher, thicker handle (the handle on mine is beginning to wear a little.