JESUSARIUS_REXYou haven't done it yet, so there's your answer.
3D printing/casting the base, gluing by hand, and shipping these makes 30 bucks not outrageous. Mildly ridiculous, but not insane.
xaronax25 20 gauge shells, ~$9. So $0.36 per shell. Super glue is cheap, pennies per key cap. Get random Chinese keycaps and shave them down if necessary. ~$10 for a whole set on ebay, with some waste keys like the space bar caps etc. Maybe $0.10 a keycap. I could probably make this keycap for around $0.50 in materials..... Tell me again how it's worth it? Yes, labor, but it's not like they're making HD 650s by hand. Sandpaper is the only tool you need. A cheap 3D printer is only $100, if you want to go that route, which means even less labor.
It'd be nicer if they used classier headstamp. I think this is a cheap Estate brass. And for other's concern, it is highly unlikely that there is any lead or residues in it by the time it makes it onto the keyswitch adapter. Maybe it's time for a brass/shotshell themed keyboard. Either way I'm inspired to try making some myself.
I think this key looks great and all, but I'd have two questions before buying one of these:
1) Is everything free of lead? Whenever I've gone shooting, there have been a number of signs at the range reminding people that spent rounds likely have lead residue on them.
2) Is this free of all residue? Echoing concerns from other people, I highly doubt this keycap would make it through security, but I'd also be worried about gunpowder residue being on my hands. If I leave from the office for the airport, am I going to have enough residue to get held at secondary? It's happened to me before on the way to the US, and it takes forever because they'll swab you and literally every item in your bag for chemical agents and explosives.
Rev.dI would be very surprised if this hasn't been thoroughly bathed in solvents and chemical free. Definely as lead free as electronics are anyway. They have to (or should) coat the brass in polyeurythane to keep it from going dull over time.
Lazylewisi think its cause all someone needs to do to make this is get their own shell and hack up an existing keycap or get a 3d printed piece to stick in one and you get the same basic result for less than $30