There's one thing that keep me away from typicalextruder. It's the unability to swap nozzle by threading. Granted it has all of the aka bs leaking, but it barely leak whenever you know how to adjust it. But not having this option is just a turn off. I have been printing 1/2 inch height to 14inch parts, and the need to swap different nozzle is really important for me.

Instead swapping the whole hot end requires a special set up so you don't have to remove them directly from the board.

Your product is quite interesting, since it allows me to do swapping. However, price is such a concern; 27$ for the 1-piece nozzle is quite expansive. Should we compared to other swapabble nozzle such from ultimaker or rostock max from seemecnc, they cost from 2$ to 10$