It does not work for me. It is rebranded donation model and it works probably even worse than with fiat.

Simple example, I've sold a pin and mistyped shipping as free for US while I ship from Europe. I asked for a tip in the letter but I haven't got anything.

And many other examples I just don't want to expand. Just selling stuff which is relatively rare and gets into narrative directly is better. And some bitcoiners think that it is really worth doing, just spending sats periodically.