$60 a set is getting more reasonable for me. I know that dyesubbing and PBT caps aren't cheap, so I don't expect you to low sale them like some others here. The shipping is going to be the big problem.
OP, like I said, I would possibly do a GB for these. What that means is this: I take orders for them, and collect addresses and money. Then, I send you the money, and you send me the caps. Then I distribute the caps. I would be willing to distribute within the US. Outside the US, it'd probably be cheaper for you to just ship them.