You need to tell us
For a typical $10 (retail sales price), how much material it is, how much time it is, and so on.
If shipping is a problem, how much it is? Is it S&H extra, or included in $10?
Is it all hand-made? How much turn-around time it'll take, if on-demand, for a order of size 1/10/100/1000?
Are you able to put special logo on it?
For quantity order or wholesale, I need a discount. How low can you go, $7, $5?