WATCH!!
been waiting for this

I see your using the basic keychain mold & indevidualy engraving them,
what kind of process are you using (etching/machining)? and what kind of paint?
as for your question, seeing that the basic model costs around 10$
if you accumulate a minimum of 50~100 orders/pcs you could lower costs and sell it for around 20$ (after all it is a key-chain)
hope this is available soon, & that you will be able to ship worldwide!