I need to adjust the costs if I make anymore, as filament costs have increased slightly and of course there is the electricity at around 3-4 hours to print each one. I underestimated the last batch, mainly the leccy costs, the 3d printer is on a smart plug and the price I popped them out for was just short of the electricity costs.
I'm not looking to make anything, just break even, but I need to put some more thought into pricing. I could do a run through October as I have some Neuro work being done on my noggin, so have to take time out of work to recover. Problem is you can probably find them on Aliexpress for 20p and as a bloke with a hobby 3d printer hooked up at home, well you know the rest